-al a-a a-b a-c aaa aab aac aah aak aal aar ab- aba abb abc abh abk abl abr ac- aca acb acc ach ack acl acr aha ahb ahc ahh ahk ahl ahr aka akb akc akh akk akl akr al- ala alb alc alh alk all alr ar- ara arb arc arh ark arl arr baa bab bac bah bak bal bar bba bbb bbc bbh bbk bbl bbr bca bcb bcc bch bck bcl bcr bha bhb bhc bhh bhk bhl bhr bka bkb bkc bkk bkl bkr bla blb blc blh blk bll blr bra brb brh brk brl brr c-- caa cab cac cah cak cal car cba cbb cbc cbh cbk cbl cbr cca ccb ccc cch cck ccl ccr ch- cha chb chc chh chk chl chr cka ckb ckc ckh cl- cla clb clc clh clk cll clr cra crb crc crh crk crl crr haa hab hac hah hak hal har hba hbb hbc hbh hbk hbl hbr hca hcb hcc hch hck hcl hcr hha hhb hhc hhh hhk hhl hhr hka hkb hkh hkk hkl hkr hla hlb hlc hlh hll hlr hr- hra hrb hrc hrh hrk hrl hrr ka- kaa kab kac kah kak kal kar kba kbb kbc kbh kbk kbl kbr kca kcb kcc kch kck kcl kcr kha khh khk khr kkb kkc kkh kkk kkl kkr kl- kla klb klc klh klr kra krc krk krl krr la- laa lab lac lah lak lal lar lba lbb lbc lbh lbk lbl lbr lca lcb lcc lch lck lcl lcr lha lhb lhc lhh lhk lhr lka lkb lkh lkl lkr lla llb llc llk lll llr lra lrb lrc lrh lrk lrr ra- raa rab rac rah rak ral rar rba rbb rbc rbh rbk rbl rbr rca rcb rcc rch rcl rcr rh- rha rhb rhc rhh rhl rhr rkb rkc rkk rla rlc rlh rll rlr rra rrb rrc rrh rrk rrl rrr