a-a a-b aaa aab aad aae aam aap ab- aba abb abd abe abm abp ad- ada adb add ade adm adp aea aeb aed aee aem aep ama amb amd ame amm amp ap- apa apb apd ape apm app b-p baa bab bad bae bam bap bba bbb bbd bbe bbm bbp bda bdb bdd bde bdm bdp be- bea beb bed bee bem bep bma bmb bmd bme bmm bmp bpa bpb bpd bpe bpm bpp daa dab dad dae dam dap dba dbb dbd dbe dbm dbp dda ddb ddd dde ddm ddp de- dea deb ded dee dem dep dma dmb dmd dme dmm dmp dpa dpb dpd dpe dpm dpp eaa eab ead eae eam eap eba ebb ebd ebe ebm ebp ed- eda edb edd ede edm edp eea eeb eed eee eem eep em- ema emb emd eme emm emp ep- epa epb epd epe epm epp maa mab mad mae mam map mba mbb mbd mbe mbm mbp mda mdb mdd mde mdm mdp mea meb med mee mem mep mma mmb mmd mme mmm mmp mpa mpb mpd mpe mpm mpp p-p paa pab pad pae pam pap pba pbb pbd pbe pbm pbp pda pdb pdd pde pdm pdp pea peb ped pee pem pep pma pmb pmd pme pmm pmp ppa ppb ppd ppe ppm ppp