-al -th a-a a-b a-c a-t aaa aab aac aah aak aal aas aat ab- aba abb abc abh abk abl abs abt ac- aca acb acc ach ack acl acs act aha ahb ahc ahh ahk ahl ahs aht aka akb akc akh akk akl aks al- ala alb alc alh alk all als alt as- asa asb asc ash ask asl ass ast at- ata atb atc ath atl ats att baa bab bac bah bak bal bas bat bba bbb bbc bbh bbk bbl bbs bbt bca bcb bcc bch bck bcl bcs bct bha bhb bhc bhh bhk bhl bhs bht bka bkb bkc bkk bkl bks bkt bla blb blc blh blk bll bls blt bsa bsb bsc bsh bsk bsl bss bst bta btb btc bth btk btl bts btt c-- caa cab cac cah cak cal cas cat cba cbb cbc cbh cbk cbl cbs cbt cca ccb ccc cch cck ccl ccs cct ch- cha chb chc chh chk chl chs cht cka ckb ckc ckh cks ckt cl- cla clb clc clh clk cll cls clt csa csb csc csh csk csl css cst cta ctb ctc cth ctk ctl cts ctt haa hab hac hah hak hal has hat hba hbb hbc hbh hbk hbl hbs hbt hca hcb hcc hch hck hcl hcs hct hha hhb hhc hhh hhk hhl hhs hht hka hkb hkh hkk hkl hks hkt hla hlb hlc hlh hll hls hlt hsa hsb hsc hsh hsk hsl hss hst hta htb htc hth htk htl hts htt k-t ka- kaa kab kac kah kak kal kas kat kba kbb kbc kbh kbk kbl kbs kca kcb kcc kch kck kcl kcs kct kha khh khk khs kkb kkc kkh kkk kkl kks kkt kl- kla klb klc klh kls klt ksa ksb ksc ksh ksk ksl kss kst kta ktb ktc kth ktk ktl kts ktt la- laa lab lac lah lak lal las lat lba lbb lbc lbh lbk lbl lbs lbt lca lcb lcc lch lck lcl lcs lct lha lhb lhc lhh lhk lhs lht lka lkb lkh lkl lks lkt lla llb llc llk lll lls llt lsa lsb lsc lsh lsk lsl lss lst lta ltb ltc lth ltk ltl lts ltt saa sab sac sah sak sal sas sat sba sbb sbc sbh sbk sbl sbs sbt sca scb scc sch sck scl scs sct sh- sha shb shc shh shk shl shs sht sk- ska skb skc skh skk skl sks skt sla slb slc slh slk sll sls slt ss- ssa ssb ssc ssh ssk ssl sss sst sta stb stc sth stk stl sts stt taa tab tac tah tak tal tas tat tba tbb tbc tbh tbk tbl tbs tbt tca tcb tcc tch tck tcl tcs tct th- tha thb thc thh thk thl ths tht tka tkb tkc tkk tkl tks tkt tla tlc tlh tlk tll tls tlt tsa tsb tsc tsh tsk tsl tss tst tta ttb ttc tth ttk ttl tts ttt