a-a a-b a-c aaa aab aac aag aam aao aap ab- aba abb abc abg abm abo abp ac- aca acb acc acg acm aco acp ag- aga agb agc agg agm ago agp ama amb amc amg amm amo amp aoa aob aoc aog aom aoo aop ap- apa apb apc apg apm apo app b-p baa bab bac bag bam bao bap bba bbb bbc bbg bbm bbo bbp bca bcb bcc bcg bcm bco bcp bga bgb bgc bgg bgm bgo bgp bma bmb bmc bmg bmm bmo bmp boa bob boc bog bom boo bop bpa bpb bpc bpg bpm bpo bpp c-- caa cab cac cag cam cao cap cba cbb cbc cbg cbm cbo cbp cca ccb ccc ccg ccm cco ccp cga cgb cgc cgg cgm cgo cgp cma cmb cmc cmg cmm cmo cmp co- coa cob coc cog com coo cop cpa cpb cpc cpg cpm cpo cpp g-p gaa gab gac gag gam gao gap gba gbc gbg gbm gbo gbp gca gcb gcc gcg gcm gco gcp gga ggb ggc ggg ggm ggo ggp gma gmb gmc gmg gmm gmo gmp goa gob goc gog gom goo gop gpa gpb gpc gpg gpm gpo gpp m-o maa mab mac mag mam mao map mba mbb mbc mbg mbm mbo mbp mc- mca mcb mcc mcg mcm mco mcp mga mgb mgc mgm mgo mgp mma mmb mmc mmg mmm mmo mmp moa mob moc mog mom moo mop mpa mpb mpc mpg mpm mpo mpp oaa oab oac oag oam oao oap ob- oba obb obc obg obm obo obp oc- oca ocb occ ocg ocm oco ocp oga ogc ogg ogo ogp om- oma omb omc omg omm omo omp oo- ooa oob ooc oog oom ooo oop op- opa opb opc opg opm opo opp p-p paa pab pac pag pam pao pap pba pbb pbc pbg pbm pbo pbp pca pcb pcc pcg pcm pco pcp pga pgb pgc pgg pgm pgo pgp pma pmb pmc pmg pmm pmo pmp poa pob poc pog pom poo pop ppa ppb ppc ppg ppm ppo ppp