a-a a-b aaa aab aak aan aao aar aaw aay ab- aba abb abk abn abo abr abw aby aka akb akk akn ako akr akw an- ana anb ank ann ano anr any aoa aob aok aon aoo aor aow ar- ara arb ark arn aro arr arw ary aw- awa awb awk awn awo awr aww awy ay- aya ayk ayn ayo ayr ayw baa bab bak ban bao bar baw bay bba bbb bbk bbn bbo bbr bbw bby bka bkb bkk bkn bko bkr bkw bna bnb bnk bnn bno bnr bnw boa bob bok bon boo bor bow boy bra brb brk brn bro brr brw bry bwa bwb bwk bwo bwr bwy by- bya byk byn byo byr ka- kaa kab kak kan kao kar kaw kay kba kbb kbk kbn kbo kbr kbw kkb kkk kkn kkr kky kn- kna knk knn kno knr koa kob kok kon koo kor kow koy kra krk krn kro krr krw kry kw- kwa kwk kwo kww kya kyn kyo kyr kyw naa nab nak nan nao nar naw nay nba nbb nbk nbn nbo nbr nbw nka nkk nkn nko nkr nky nna nnb nnk nnn nno nnw no- noa nob nok non noo nor now noy nra nrb nrk nrn nro nrr nrw nry nwa nwb nwn nwo nwr nya nyk nyn nyo nyy oaa oab oak oan oao oar oaw ob- oba obb obk obn obo obr obw oby oka okb okk oko okr okw on- ona onb onk onn ono onr ony oo- ooa oob ook oon ooo oor oow or- ora orb ork orn oro orr ory owa owb owk own owo oww oya oyo ra- raa rab rak ran rao rar raw ray rba rbb rbk rbn rbo rbr rbw rkb rkk rko rky rna rnb rnn rno rnr rnw rny roa rob rok ron roo ror row roy rra rrb rrk rrn rrr rwa rwb rwr rwy ry- rya ryk ryn ryo ryr ryy waa wab wak wan wao war waw way wba wbb wbn wbo wbr wbw wka wkb wko wkr wkw wky wn- wna wnn wno wnw wny woa wob wok won woo wor wow woy wr- wra wrk wrn wro wrr wrw wry wwa wwn wwo www wy- wya wyk wyn wyo wyr yaa yab yak yan yao yar yaw yay ybr yby yka ykk ykn yna ynk ynn yny yob yok yon yoo yor yow yoy yra yrn yro yyb yyy