-al a-a a-b a-c aaa aab aac aak aal aam aar ab- aba abb abc abk abl abm abr ac- aca acb acc ack acl acm acr aka akb akc akk akl akm akr al- ala alb alc alk all alm alr ama amb amc amk aml amm amr ar- ara arb arc ark arl arm arr baa bab bac bak bal bam bar bba bbb bbc bbk bbl bbm bbr bca bcb bcc bck bcl bcm bcr bka bkb bkc bkk bkl bkm bkr bla blb blc blk bll blm blr bma bmb bmc bmk bml bmm bmr bra brb brk brl brm brr c-- caa cab cac cak cal cam car cba cbb cbc cbk cbl cbm cbr cca ccb ccc cck ccl ccm ccr cka ckb ckc ckm cl- cla clb clc clk cll clm clr cma cmb cmc cmk cml cmm cmr cra crb crc crk crl crm crr ka- kaa kab kac kak kal kam kar kba kbb kbc kbk kbl kbm kbr kca kcb kcc kck kcl kcm kcr kkb kkc kkk kkl kkm kkr kl- kla klb klc klm klr kma kmb kmc kmk kml kmm kra krc krk krl krr la- laa lab lac lak lal lam lar lba lbb lbc lbk lbl lbm lbr lca lcb lcc lck lcl lcm lcr lka lkb lkl lkr lla llb llc llk lll llm llr lma lmb lmc lmk lml lmm lmr lra lrb lrc lrk lrm lrr m-r maa mab mac mak mal mam mar mba mbb mbc mbk mbl mbm mbr mc- mca mcb mcc mck mcl mcm mcr mka mkb mkc mkk mkl mkm mkr mla mlb mlc mlk mll mlm mlr mma mmb mmc mmk mml mmm mmr mra mrb mrc mrk mrl mrm mrr ra- raa rab rac rak ral ram rar rba rbb rbc rbk rbl rbm rbr rca rcb rcc rcl rcm rcr rkb rkc rkk rkm rla rlc rll rlm rlr rma rmb rmc rml rmm rmr rra rrb rrc rrk rrl rrm rrr