-al a-a a-b a-c aaa aab aac aae aal aam aap ab- aba abb abc abe abl abm abp ac- aca acb acc ace acl acm acp aea aeb aec aee ael aem aep al- ala alb alc ale all alm alp ama amb amc ame aml amm amp ap- apa apb apc ape apl apm app b-p baa bab bac bae bal bam bap bba bbb bbc bbe bbl bbm bbp bca bcb bcc bce bcl bcm bcp be- bea beb bec bee bel bem bep bla blb blc ble bll blm blp bma bmb bmc bme bml bmm bmp bpa bpb bpc bpe bpl bpm bpp c-- caa cab cac cae cal cam cap cba cbb cbc cbe cbl cbm cbp cca ccb ccc cce ccl ccm ccp ce- cea ceb cec cee cel cem cep cl- cla clb clc cle cll clm clp cma cmb cmc cme cml cmm cmp cpa cpb cpc cpe cpl cpm cpp eaa eab eac eae eal eam eap eba ebb ebc ebe ebl ebm ebp ec- eca ecb ecc ece ecl ecm eea eeb eec eee eel eem eep ela elb elc ele ell elm elp em- ema emb emc eme eml emm emp ep- epa epb epc epe epl epm epp l-p la- laa lab lac lae lal lam lap lba lbb lbc lbe lbl lbm lbp lca lcb lcc lce lcl lcm lcp lea leb lec lee lel lem lep lla llb llc lle lll llm llp lma lmb lmc lme lml lmm lmp lpa lpb lpc lpe lpl lpm lpp maa mab mac mae mal mam map mba mbb mbc mbe mbl mbm mbp mc- mca mcb mcc mce mcl mcm mcp mea meb mec mee mel mem mep mla mlb mlc mle mll mlm mlp mma mmb mmc mme mml mmm mmp mpa mpb mpc mpe mpl mpm mpp p-p paa pab pac pae pal pam pap pba pbb pbc pbe pbl pbm pbp pca pcb pcc pce pcl pcm pcp pea peb pec pee pel pem pep pla plb plc ple pll plm plp pma pmb pmc pme pml pmm pmp ppa ppb ppc ppe ppl ppm ppp