-al -ic a-a a-b a-c a-i aaa aab aac aag aai aak aal aar ab- aba abb abc abg abi abk abl abr ac- aca acb acc acg aci ack acl acr ag- aga agb agc agg agi agk agl agr ai- aia aib aic aig aii aik ail air aka akb akc akg aki akk akl akr al- ala alb alc alg ali alk all alr ar- ara arb arc arg ari ark arl arr baa bab bac bag bai bak bal bar bba bbb bbc bbg bbi bbk bbl bbr bca bcb bcc bcg bci bck bcl bcr bga bgb bgc bgg bgi bgk bgl bgr bi- bia bib bic big bii bik bil bir bka bkb bkc bkg bkk bkl bkr bla blb blc blg bli blk bll blr bra brb brg bri brk brl brr c-- caa cab cac cag cai cak cal car cba cbb cbc cbg cbi cbk cbl cbr cca ccb ccc ccg cci cck ccl ccr cga cgb cgc cgg cgi cgl cgr ci- cia cib cic cig cii cik cil cir cka ckb ckc cki cl- cla clb clc clg cli clk cll clr cra crb crc crg cri crk crl crr gaa gab gac gag gai gak gal gar gba gbc gbg gbi gbk gbl gbr gca gcb gcc gcg gci gck gcl gcr gga ggb ggc ggg ggi ggr gia gib gic gig gii gik gil gir gka gkb gla glb glc glg gli glk gll glr gra grb grc grg gri grk grl grr ia- iaa iab iac iag iai ial iar iba ibb ibc ibg ibi ibk ibl ibr ica icb icc icg ici ick icl icr iga igb igc igg igi igk igl igr iia iib iic iii iil iir ika ikb ikc iki ikk ikl ikr il- ila ilb ilc ilg ili ilk ill ilr ir- ira irb irc irg iri irk irl irr ka- kaa kab kac kag kai kak kal kar kba kbb kbc kbi kbk kbl kbr kca kcb kcc kcg kci kck kcl kcr kga kgb kgc kgi kgl kia kib kic kig kii kik kil kir kkb kkc kki kkk kkl kkr kl- kla klb klc klg kli klr kra krc krg kri krk krl krr la- laa lab lac lag lai lak lal lar lba lbb lbc lbg lbi lbk lbl lbr lca lcb lcc lcg lci lck lcl lcr lga lgb lgc lgg lgi lgk lgl lgr lia lib lic lig lii lik lil lir lka lkb lkg lkl lkr lla llb llc llg lli llk lll llr lra lrb lrc lrg lri lrk lrr ra- raa rab rac rag rai rak ral rar rba rbb rbc rbg rbi rbk rbl rbr rca rcb rcc rcg rci rcl rcr rga rgb rgc rgg rgi rgk rgr ria rib ric rig rii rik ril rir rkb rkc rkg rkk rla rlc rlg rli rll rlr rra rrb rrc rrg rri rrk rrl rrr