a-a a-b aaa aab aaj aan aao aar aay ab- aba abb abj abn abo abr aby aja ajb ajj ajn ajo ajr ajy an- ana anb anj ann ano anr any aoa aob aoj aon aoo aor ar- ara arb arj arn aro arr ary ay- aya ayn ayo ayr baa bab baj ban bao bar bay bba bbb bbn bbo bbr bby bja bjj bjn bjr bna bnb bnj bnn bno bnr boa bob boj bon boo bor boy bra brb brj brn bro brr bry by- bya byj byn byo byr jaa jab jaj jan jao jar jay jba jbj jbo jbr jja jjb jjj jjr jjy jna jnj jnn jno jnr joa job joj jon joo jor joy jra jrb jrn jro jrr jyj jyr naa nab naj nan nao nar nay nba nbb nbn nbo nbr nja njn nna nnb nnn nno no- noa nob noj non noo nor noy nra nrb nrj nrn nro nrr nry nya nyn nyo nyy oaa oab oaj oan oao oar ob- oba obb obj obn obo obr oby oja ojb ojo ojy on- ona onb onj onn ono onr ony oo- ooa oob oon ooo oor or- ora orb orn oro orr ory oya oyo ra- raa rab raj ran rao rar ray rba rbb rbn rbo rbr rja rjr rna rnb rnn rno rnr rny roa rob roj ron roo ror roy rra rrb rrn rrr ry- rya ryn ryo ryr ryy yaa yab yan yao yar yay ybr yby yna ynn yny yob yoj yon yoo yor yoy yra yrn yro yyb yyy