a-ha aaaa aaac aaah aaar aaca aacc aach aacr aact aaha aara aarc aart aata aatc aatt ac-t acaa acac acar acat acca accc acch acct acha achh achr acht acr- acra acrc acrr acta actc acth actt ahac ahah ahar ahat ahha ahra ahrc ahrr ahta arac arah arar arat arc- arca arch arct arh- arr- arra arrc arrh arrr arrt arta artc arth artr at-t ataa atac atar atat atca atcc atch atcr atha atra atrc atta attr caaa caac caah caat cac- caca cacc cach cacr caha caht cara carc carr cart cat- cata catc cath catt ccaa ccac ccar ccat ccca cccc ccha cchr ccra ccrc ccrt cctc cctt chaa chac chah char chat chca chch chha chra chrc chrr chrt chtr chtt crac crar crat crca crcc crcr crrt crtc ctca ctrc ctta haar haat haha haht hara harc harh harr hart hata hath hatt hcat hcca hccc hcch hhaa hhat hhhh hrac hrrc hrta htcc htra httr raat rac- raca racc rach ract raha rahr raht rara rata rath ratt rcac rccc rctc rrah rrat rrrr rtca rtcc taa- taar taat taca tacc tach tact taha tahr tara tarc tarr tart tata tath tatr tatt tcca tccc tch- tcha tchh tchr tctc thaa thar that thca thch thra thtr traa trac trat trca trcc trra trtc trtr tttt