2、ACBBBADABABBCADDA81828384858687888990919293949596979899100CBDCBAABABCCBDCACDBD101102103104105106107 108 109 110 111 112 113 114 115 116 117 118 119 120 BBBCDDD A A A A D D B A A B C C C 121122123124125126127128129130131132133134135136137138139140DBDCDDCDACDDAB