-al a-a a-b a-c aaa aab aac aae aag aak aal aap ab- aba abb abc abe abg abk abl abp ac- aca acb acc ace acg ack acl acp aea aeb aec aee aeg aek ael aep ag- aga agb agc age agg agk agl agp aka akb akc ake akg akk akl akp al- ala alb alc ale alg alk all alp ap- apa apb apc ape apg apk apl app b-p baa bab bac bae bag bak bal bap bba bbb bbc bbe bbg bbk bbl bbp bca bcb bcc bce bcg bck bcl bcp be- bea beb bec bee beg bek bel bep bga bgb bgc bge bgg bgk bgl bgp bka bkb bkc bke bkg bkk bkl bkp bla blb blc ble blg blk bll blp bpa bpb bpc bpe bpg bpl bpp c-- caa cab cac cae cag cak cal cap cba cbb cbc cbe cbg cbk cbl cbp cca ccb ccc cce ccg cck ccl ccp ce- cea ceb cec cee ceg cek cel cep cga cgb cgc cge cgg cgl cgp cka ckb ckc cl- cla clb clc cle clg clk cll clp cpa cpb cpc cpe cpg cpk cpl cpp eaa eab eac eae eag eak eal eap eba ebb ebc ebe ebg ebk ebl ebp ec- eca ecb ecc ece ecg eck ecl eea eeb eec eee eeg eek eel eep ega egb egc ege egg egl egp eka ekb ekc eke ekg ekl ekp ela elb elc ele elg elk ell elp ep- epa epb epc epe epg epl epp g-p gaa gab gac gae gag gak gal gap gba gbc gbe gbg gbk gbl gbp gca gcb gcc gce gcg gck gcl gcp ge- gea geb gec gee geg gek gel gep gga ggb ggc ggg ggp gka gkb gkp gla glb glc gle glg glk gll glp gpa gpb gpc gpe gpg gpk gpl gpp ka- kaa kab kac kae kag kak kal kap kba kbb kbc kbe kbk kbl kbp kca kcb kcc kce kcg kck kcl kcp ke- kea keb kec kee keg kek kel kep kga kgb kgc kgl kgp kkb kkc kke kkk kkl kkp kl- kla klb klc klg kpa kpc kpe kpk kpl kpp l-p la- laa lab lac lae lag lak lal lap lba lbb lbc lbe lbg lbk lbl lbp lca lcb lcc lce lcg lck lcl lcp lea leb lec lee leg lek lel lep lga lgb lgc lge lgg lgk lgl lgp lka lkb lkg lkl lkp lla llb llc lle llg llk lll llp lpa lpb lpc lpe lpg lpk lpl lpp p-p paa pab pac pae pag pak pal pap pba pbb pbc pbe pbg pbk pbl pbp pca pcb pcc pce pcg pck pcl pcp pea peb pec pee peg pek pel pep pga pgb pgc pge pgg pgk pgl pgp pka pkb pkc pke pkg pkl pkp pla plb plc ple plg plk pll plp ppa ppb ppc ppe ppg ppk ppl ppp