a-a a-b a-c aaa aab aac aae aag aah aan aao aap ab- aba abb abc abe abg abh abn abo abp ac- aca acb acc ace acg ach acn aco acp aea aeb aec aee aeg aeh aen aeo aep ag- aga agb agc age agg agh agn ago agp aha ahb ahc ahe ahg ahh ahn aho ahp an- ana anb anc ane ang anh ann ano anp aoa aob aoc aoe aog aoh aon aoo aop ap- apa apb apc ape apg aph apn apo app b-p baa bab bac bae bag bah ban bao bap bba bbb bbc bbe bbg bbh bbn bbo bbp bca bcb bcc bce bcg bch bcn bco bcp be- bea beb bec bee beg beh ben beo bep bga bgb bgc bge bgg bgh bgn bgo bgp bha bhb bhc bhe bhg bhh bho bhp bna bnb bnc bne bng bnn bno bnp boa bob boc boe bog boh bon boo bop bpa bpb bpc bpe bpg bph bpn bpo bpp c-- caa cab cac cae cag cah can cao cap cba cbb cbc cbe cbg cbh cbn cbo cbp cca ccb ccc cce ccg cch ccn cco ccp ce- cea ceb cec cee ceg ceh cen ceo cep cga cgb cgc cge cgg cgh cgn cgo cgp ch- cha chb chc che chg chh chn cho chp cn- cna cnb cnc cne cng cnh cnn cno cnp co- coa cob coc coe cog coh con coo cop cpa cpb cpc cpe cpg cph cpn cpo cpp eaa eab eac eae eag eah ean eao eap eba ebb ebc ebe ebg ebh ebn ebo ebp ec- eca ecb ecc ece ecg ech ecn eco eea eeb eec eee eeg een eeo eep ega egb egc ege egg egh egn ego egp eha ehb ehc ehe ehg ehh ehn eho ehp en- ena enb enc ene eng enh enn eno enp eo- eoa eob eoc eoe eog eoh eon eoo eop ep- epa epb epc epe epg eph epn epo epp g-p gaa gab gac gae gag gah gan gao gap gba gbc gbe gbg gbh gbn gbo gbp gca gcb gcc gce gcg gch gcn gco gcp ge- gea geb gec gee geg geh gen geo gep gga ggb ggc ggg ggh ggn ggo ggp gha ghb ghc ghe ghg ghh ghn gho ghp gna gnb gnc gne gnn gno gnp goa gob goc goe gog goh gon goo gop gpa gpb gpc gpe gpg gph gpn gpo gpp haa hab hac hae hag hah han hao hap hba hbb hbc hbe hbg hbh hbn hbo hbp hca hcb hcc hce hcg hch hcn hco hcp he- hea heb hec hee heg heh hen heo hep hga hgb hgc hge hgg hgh hgn hgo hgp hha hhb hhc hhe hhg hhh hhn hho hhp hna hnb hnc hne hng hnh hnn hno hoa hob hoc hoe hog hoh hon hoo hop hpa hpb hpc hpe hpg hph hpn hpo hpp naa nab nac nae nag nah nan nao nap nba nbb nbc nbe nbg nbn nbo nbp nca ncb ncc nce ncg nch ncn nco ncp ne- nea neb nec nee neg neh nen neo nep nga ngb ngc nge ngg ngh ngn ngo ngp nha nhb nhc nhe nhg nhh nhn nhp nna nnb nnc nne nng nnh nnn nno nnp no- noa nob noc noe nog noh non noo nop npa npb npc npe npg nph npn npo npp oaa oab oac oae oag oah oan oao oap ob- oba obb obc obe obg obh obn obo obp oc- oca ocb occ ocg och ocn oco ocp oea oeb oec oee oeg oeh oen oeo oep oga ogc oge ogg ogh ogn ogo ogp oha ohc ohe ohg ohh ohn oho ohp on- ona onb onc one ong onh onn ono onp oo- ooa oob ooc oog ooh oon ooo oop op- opa opb opc ope opg oph opn opo opp p-p paa pab pac pae pag pah pan pao pap pba pbb pbc pbe pbg pbn pbo pbp pca pcb pcc pce pcg pch pcn pco pcp pea peb pec pee peg peh pen peo pep pga pgb pgc pge pgg pgh pgn pgo pgp pha phb phc phe phg phn pho php pn- pna pnb pnc pne png pnh pnn pno pnp poa pob poc poe pog poh pon poo pop ppa ppb ppc ppe ppg pph ppn ppo ppp