Exercise1: BCCCADBCACBDBDBBACCBAABBC BCCBC
Exercise 2: CADCBBCDABADACDBDBBC BDCDBBAADB
Exercise 3: CCCDABBABACCDBDBCBABDDBACBDBCD
Exercise 4: BACDDBCDCBCDBDABACABCABDCCCCBC
Exercise 5: BCCCABDACBACBDBABDBACDDDCDCACC
Exercise 6: ADACDBABCDDABA
Exercise 7: BCABCAABCDBCCABAAADBCCABCBDCBC
Exercise 8: ACCCADBBCBBCBDBBACADAABDCCCCDC
