+ } else if ((*ch & 0xFF00) == 0x2200) {
+ switch (*ch) {
+ case 0x2208: *ch = 0x220B; break;
+ case 0x2209: *ch = 0x220C; break;
+ case 0x220A: *ch = 0x220D; break;
+ case 0x220B: *ch = 0x2208; break;
+ case 0x220C: *ch = 0x2209; break;
+ case 0x220D: *ch = 0x220A; break;
+ case 0x2215: *ch = 0x29F5; break;
+ case 0x223C: *ch = 0x223D; break;
+ case 0x223D: *ch = 0x223C; break;
+ case 0x2243: *ch = 0x22CD; break;
+ case 0x2252: *ch = 0x2253; break;
+ case 0x2253: *ch = 0x2252; break;
+ case 0x2254: *ch = 0x2255; break;
+ case 0x2255: *ch = 0x2254; break;
+ case 0x2264: *ch = 0x2265; break;
+ case 0x2265: *ch = 0x2264; break;
+ case 0x2266: *ch = 0x2267; break;
+ case 0x2267: *ch = 0x2266; break;
+ case 0x2268: *ch = 0x2269; break;
+ case 0x2269: *ch = 0x2268; break;
+ case 0x226A: *ch = 0x226B; break;
+ case 0x226B: *ch = 0x226A; break;
+ case 0x226E: *ch = 0x226F; break;
+ case 0x226F: *ch = 0x226E; break;
+ case 0x2270: *ch = 0x2271; break;
+ case 0x2271: *ch = 0x2270; break;
+ case 0x2272: *ch = 0x2273; break;
+ case 0x2273: *ch = 0x2272; break;
+ case 0x2274: *ch = 0x2275; break;
+ case 0x2275: *ch = 0x2274; break;
+ case 0x2276: *ch = 0x2277; break;
+ case 0x2277: *ch = 0x2276; break;
+ case 0x2278: *ch = 0x2279; break;
+ case 0x2279: *ch = 0x2278; break;
+ case 0x227A: *ch = 0x227B; break;
+ case 0x227B: *ch = 0x227A; break;
+ case 0x227C: *ch = 0x227D; break;
+ case 0x227D: *ch = 0x227C; break;
+ case 0x227E: *ch = 0x227F; break;
+ case 0x227F: *ch = 0x227E; break;
+ case 0x2280: *ch = 0x2281; break;
+ case 0x2281: *ch = 0x2280; break;
+ case 0x2282: *ch = 0x2283; break;
+ case 0x2283: *ch = 0x2282; break;
+ case 0x2284: *ch = 0x2285; break;
+ case 0x2285: *ch = 0x2284; break;
+ case 0x2286: *ch = 0x2287; break;
+ case 0x2287: *ch = 0x2286; break;
+ case 0x2288: *ch = 0x2289; break;
+ case 0x2289: *ch = 0x2288; break;
+ case 0x228A: *ch = 0x228B; break;
+ case 0x228B: *ch = 0x228A; break;
+ case 0x228F: *ch = 0x2290; break;
+ case 0x2290: *ch = 0x228F; break;
+ case 0x2291: *ch = 0x2292; break;
+ case 0x2292: *ch = 0x2291; break;
+ case 0x2298: *ch = 0x29B8; break;
+ case 0x22A2: *ch = 0x22A3; break;
+ case 0x22A3: *ch = 0x22A2; break;
+ case 0x22A6: *ch = 0x2ADE; break;
+ case 0x22A8: *ch = 0x2AE4; break;
+ case 0x22A9: *ch = 0x2AE3; break;
+ case 0x22AB: *ch = 0x2AE5; break;
+ case 0x22B0: *ch = 0x22B1; break;
+ case 0x22B1: *ch = 0x22B0; break;
+ case 0x22B2: *ch = 0x22B3; break;
+ case 0x22B3: *ch = 0x22B2; break;
+ case 0x22B4: *ch = 0x22B5; break;
+ case 0x22B5: *ch = 0x22B4; break;
+ case 0x22B6: *ch = 0x22B7; break;
+ case 0x22B7: *ch = 0x22B6; break;
+ case 0x22C9: *ch = 0x22CA; break;
+ case 0x22CA: *ch = 0x22C9; break;
+ case 0x22CB: *ch = 0x22CC; break;
+ case 0x22CC: *ch = 0x22CB; break;
+ case 0x22CD: *ch = 0x2243; break;
+ case 0x22D0: *ch = 0x22D1; break;
+ case 0x22D1: *ch = 0x22D0; break;
+ case 0x22D6: *ch = 0x22D7; break;
+ case 0x22D7: *ch = 0x22D6; break;
+ case 0x22D8: *ch = 0x22D9; break;
+ case 0x22D9: *ch = 0x22D8; break;
+ case 0x22DA: *ch = 0x22DB; break;
+ case 0x22DB: *ch = 0x22DA; break;
+ case 0x22DC: *ch = 0x22DD; break;
+ case 0x22DD: *ch = 0x22DC; break;
+ case 0x22DE: *ch = 0x22DF; break;
+ case 0x22DF: *ch = 0x22DE; break;
+ case 0x22E0: *ch = 0x22E1; break;
+ case 0x22E1: *ch = 0x22E0; break;
+ case 0x22E2: *ch = 0x22E3; break;
+ case 0x22E3: *ch = 0x22E2; break;
+ case 0x22E4: *ch = 0x22E5; break;
+ case 0x22E5: *ch = 0x22E4; break;
+ case 0x22E6: *ch = 0x22E7; break;
+ case 0x22E7: *ch = 0x22E6; break;
+ case 0x22E8: *ch = 0x22E9; break;
+ case 0x22E9: *ch = 0x22E8; break;
+ case 0x22EA: *ch = 0x22EB; break;
+ case 0x22EB: *ch = 0x22EA; break;
+ case 0x22EC: *ch = 0x22ED; break;
+ case 0x22ED: *ch = 0x22EC; break;
+ case 0x22F0: *ch = 0x22F1; break;
+ case 0x22F1: *ch = 0x22F0; break;
+ case 0x22F2: *ch = 0x22FA; break;
+ case 0x22F3: *ch = 0x22FB; break;
+ case 0x22F4: *ch = 0x22FC; break;
+ case 0x22F6: *ch = 0x22FD; break;
+ case 0x22F7: *ch = 0x22FE; break;
+ case 0x22FA: *ch = 0x22F2; break;
+ case 0x22FB: *ch = 0x22F3; break;
+ case 0x22FC: *ch = 0x22F4; break;
+ case 0x22FD: *ch = 0x22F6; break;
+ case 0x22FE: *ch = 0x22F7; break;