a-a a-b aaa aab aam aan aao aar aay ab- aba abb abm abn abo abr aby ama amb amm amn amo amr amy an- ana anb anm ann ano anr any aoa aob aom aon aoo aor ar- ara arb arm arn aro arr ary ay- aya ayn ayo ayr baa bab bam ban bao bar bay bba bbb bbm bbn bbo bbr bby bma bmb bmm bmn bmo bmr bna bnb bnn bno bnr boa bob bom bon boo bor boy bra brb brm brn bro brr bry by- bya bym byn byo byr m-o m-r maa mab mam man mao mar may mba mbb mbm mbo mbr mma mmb mmm mmn mmo mmr mna mnb mnm mnn mno mnr moa mob mom mon moo mor moy mra mrb mrm mrn mro mrr mry my- mya myb mym myn myo myr naa nab nam nan nao nar nay nba nbb nbm nbn nbo nbr nma nmb nmm nmn nmo nmr nna nnb nnm nnn nno no- noa nob nom non noo nor noy nra nrb nrm nrn nro nrr nry nya nym nyn nyo nyy oaa oab oam oan oao oar ob- oba obb obm obn obo obr oby om- oma omb omm omn omo omr omy on- ona onb onn ono onr ony oo- ooa oob oom oon ooo oor or- ora orb orm orn oro orr ory oya oyo ra- raa rab ram ran rao rar ray rba rbb rbm rbn rbo rbr rma rmb rmm rmn rmo rmr rna rnb rnm rnn rno rnr rny roa rob rom ron roo ror roy rra rrb rrm rrn rrr ry- rya rym ryn ryo ryr ryy yaa yab yam yan yao yar yay ybm ybr yby yma ymm ymo yna ynn yny yob yom yon yoo yor yoy yra yrn yro yyb yyy