-al -ic a-a a-b a-c a-i a-t aaa aab aac aai aak aal aar aat ab- aba abb abc abi abk abl abr abt ac- aca acb acc aci ack acl acr act ai- aia aib aic aii aik ail air ait aka akb akc aki akk akl akr al- ala alb alc ali alk all alr alt ar- ara arb arc ari ark arl arr art at- ata atb atc ati atl atr att baa bab bac bai bak bal bar bat bba bbb bbc bbi bbk bbl bbr bbt bca bcb bcc bci bck bcl bcr bct bi- bia bib bic bii bik bil bir bit bka bkb bkc bkk bkl bkr bkt bla blb blc bli blk bll blr blt bra brb bri brk brl brr brt bta btb btc bti btk btl btr btt c-- caa cab cac cai cak cal car cat cba cbb cbc cbi cbk cbl cbr cbt cca ccb ccc cci cck ccl ccr cct ci- cia cib cic cii cik cil cir cit cka ckb ckc cki ckt cl- cla clb clc cli clk cll clr clt cra crb crc cri crk crl crr crt cta ctb ctc cti ctk ctl ctr ctt ia- iaa iab iac iai ial iar iat iba ibb ibc ibi ibk ibl ibr ibt ica icb icc ici ick icl icr ict iia iib iic iii iil iir iit ika ikb ikc iki ikk ikl ikr ikt il- ila ilb ilc ili ilk ill ilr ilt ir- ira irb irc iri irk irl irr irt ita itb itc iti itk itl itt k-t ka- kaa kab kac kai kak kal kar kat kba kbb kbc kbi kbk kbl kbr kca kcb kcc kci kck kcl kcr kct kia kib kic kii kik kil kir kit kkb kkc kki kkk kkl kkr kkt kl- kla klb klc kli klr klt kra krc kri krk krl krr krt kta ktb ktc ktk ktl ktr ktt la- laa lab lac lai lak lal lar lat lba lbb lbc lbi lbk lbl lbr lbt lca lcb lcc lci lck lcl lcr lct lia lib lic lii lik lil lir lit lka lkb lkl lkr lkt lla llb llc lli llk lll llr llt lra lrb lrc lri lrk lrr lrt lta ltb ltc lti ltk ltl ltr ltt ra- raa rab rac rai rak ral rar rat rba rbb rbc rbi rbk rbl rbr rbt rca rcb rcc rci rcl rcr rct ria rib ric rii rik ril rir rit rkb rkc rkk rkt rla rlc rli rll rlr rlt rra rrb rrc rri rrk rrl rrr rrt rta rtb rtc rti rtk rtl rtr rtt taa tab tac tai tak tal tar tat tba tbb tbc tbi tbk tbl tbr tbt tca tcb tcc tci tck tcl tcr tct tia tib tic tii tik til tir tit tka tkb tkc tkk tkl tkr tkt tla tlc tli tlk tll tlr tlt tra trb trc tri trk trl trr trt tta ttb ttc tti ttk ttl ttr ttt