a-a a-b a-c aaa aab aac aad aae aam aap ab- aba abb abc abd abe abm abp ac- aca acb acc acd ace acm acp ad- ada adb adc add ade adm adp aea aeb aec aed aee aem aep ama amb amc amd ame amm amp ap- apa apb apc apd ape apm app b-p baa bab bac bad bae bam bap bba bbb bbc bbd bbe bbm bbp bca bcb bcc bcd bce bcm bcp bda bdb bdc bdd bde bdm bdp be- bea beb bec bed bee bem bep bma bmb bmc bmd bme bmm bmp bpa bpb bpc bpd bpe bpm bpp c-- caa cab cac cad cae cam cap cba cbb cbc cbd cbe cbm cbp cca ccb ccc ccd cce ccm ccp cda cdb cdc cdd cde cdm cdp ce- cea ceb cec ced cee cem cep cma cmb cmc cmd cme cmm cmp cpa cpb cpc cpd cpe cpm cpp daa dab dac dad dae dam dap dba dbb dbc dbd dbe dbm dbp dca dcb dcc dcd dce dcm dcp dda ddb ddc ddd dde ddm ddp de- dea deb dec ded dee dem dep dma dmb dmc dmd dme dmm dmp dpa dpb dpc dpd dpe dpm dpp eaa eab eac ead eae eam eap eba ebb ebc ebd ebe ebm ebp ec- eca ecb ecc ecd ece ecm ed- eda edb edc edd ede edm edp eea eeb eec eed eee eem eep em- ema emb emc emd eme emm emp ep- epa epb epc epd epe epm epp maa mab mac mad mae mam map mba mbb mbc mbd mbe mbm mbp mc- mca mcb mcc mcd mce mcm mcp mda mdb mdc mdd mde mdm mdp mea meb mec med mee mem mep mma mmb mmc mmd mme mmm mmp mpa mpb mpc mpd mpe mpm mpp p-p paa pab pac pad pae pam pap pba pbb pbc pbd pbe pbm pbp pca pcb pcc pcd pce pcm pcp pda pdb pdc pdd pde pdm pdp pea peb pec ped pee pem pep pma pmb pmc pmd pme pmm pmp ppa ppb ppc ppd ppe ppm ppp