a-a a-b a-c aaa aab aac aak aas aau aaw ab- aba abb abc abk abs abu abw ac- aca acb acc ack acs acu acw aka akb akc akk aks aku akw as- asa asb asc ask ass asu asw au- aua aub auc auk aus auw aw- awa awb awc awk aws awu aww b-u baa bab bac bak bas bau baw bba bbb bbc bbk bbs bbu bbw bca bcb bcc bck bcs bcu bka bkb bkc bkk bks bkw bsa bsb bsc bsk bss bsu bsw bua bub buc buk bus buu buw bwa bwb bwc bwk bws bwu c-- caa cab cac cak cas cau caw cba cbb cbc cbk cbs cbu cbw cca ccb ccc cck ccs ccu ccw cka ckb ckc cks ckw csa csb csc csk css csu csw cua cub cuc cuk cus cuu cuw cw- cwa cwb cwc cwk cws cwu ka- kaa kab kac kak kas kau kaw kba kbb kbc kbk kbs kbu kbw kca kcb kcc kck kcs kcu kkb kkc kkk kks kku ksa ksb ksc ksk kss ksu ksw kub kuc kuk kus kuu kw- kwa kwc kwk kws kww saa sab sac sak sas sau saw sba sbb sbc sbk sbs sbu sbw sca scb scc sck scs scu scw sk- ska skb skc skk sks sku skw ss- ssa ssb ssc ssk sss ssu ssw sua sub suc suk sus suu suw swa swb swc swk sws swu ua- uaa uab uac uak uas uau uaw uba ubb ubc ubk ubs ubu ubw uca ucb ucc uck ucs ucu ucw uka ukb ukc ukk uku usa usb usc usk uss usu usw uua uuc uus uuu uwa uwb uwc uws uww waa wab wac wak was wau waw wba wbb wbc wbs wbw wca wcb wcc wck wcs wcu wcw wka wkb wkc wks wkw wsa wsb wsc wsk wss wsu wsw wua wub wuc wus wwa wwc wwu www