S_even_CM_odd_CMC4  400 enc/gb18030.c  	state = S_even_CM_odd_CMC4;
S_even_CM_odd_CMC4  404 enc/gb18030.c      case S_even_CM_odd_CMC4: /* CM CM CM C4 CM C4 CM C4 */
S_even_CM_odd_CMC4  553 enc/gb18030.c    case S_even_CM_odd_CMC4:  return (UChar *)(s - 1);