a-a a-b a-c aaa aab aac aam aan aao aap aay ab- aba abb abc abm abn abo abp aby ac- aca acb acc acm acn aco acp acy ama amb amc amm amn amo amp amy an- ana anb anc anm ann ano anp any aoa aob aoc aom aon aoo aop ap- apa apb apc apm apn apo app apy ay- aya ayc ayn ayo ayp b-p baa bab bac bam ban bao bap bay bba bbb bbc bbm bbn bbo bbp bby bca bcb bcc bcm bcn bco bcp bcy bma bmb bmc bmm bmn bmo bmp bna bnb bnc bnn bno bnp boa bob boc bom bon boo bop boy bpa bpb bpc bpm bpn bpo bpp bpy by- bya byc bym byn byo byp c-- caa cab cac cam can cao cap cay cba cbb cbc cbm cbn cbo cbp cby cca ccb ccc ccm ccn cco ccp cma cmb cmc cmm cmn cmo cmp cmy cn- cna cnb cnc cnm cnn cno cnp cny co- coa cob coc com con coo cop coy cpa cpb cpc cpm cpn cpo cpp cya cyb cyc cym cyn cyo cyp m-o maa mab mac mam man mao map may mba mbb mbc mbm mbo mbp mc- mca mcb mcc mcm mcn mco mcp mma mmb mmc mmm mmn mmo mmp mna mnb mnc mnm mnn mno mnp moa mob moc mom mon moo mop moy mpa mpb mpc mpm mpn mpo mpp my- mya myb myc mym myn myo naa nab nac nam nan nao nap nay nba nbb nbc nbm nbn nbo nbp nca ncb ncc ncm ncn nco ncp nma nmb nmc nmm nmn nmo nmp nna nnb nnc nnm nnn nno nnp no- noa nob noc nom non noo nop noy npa npb npc npm npn npo npp nya nyc nym nyn nyo nyp nyy oaa oab oac oam oan oao oap ob- oba obb obc obm obn obo obp oby oc- oca ocb occ ocm ocn oco ocp om- oma omb omc omm omn omo omp omy on- ona onb onc onn ono onp ony oo- ooa oob ooc oom oon ooo oop op- opa opb opc opm opn opo opp opy oya oyo p-p paa pab pac pam pan pao pap pay pba pbb pbc pbm pbn pbo pbp pby pca pcb pcc pcm pcn pco pcp pma pmb pmc pmm pmn pmo pmp pn- pna pnb pnc pnm pnn pno pnp pny poa pob poc pom pon poo pop poy ppa ppb ppc ppm ppn ppo ppp py- pya pyb pyc pym pyn pyo yaa yab yac yam yan yao yap yay ybc ybm ybp yby yca ycc yco ycp ycy yma ymc ymm ymo yna ynn ynp yny yob yoc yom yon yoo yop yoy ypa ypo yyb yyc yyy