a-a a-b a-t aaa aab aan aao aar aat aaw ab- aba abb abn abo abr abt abw an- ana anb ann ano anr ant aoa aob aon aoo aor aot aow ar- ara arb arn aro arr art arw at- ata atb atn ato atr att atw aw- awa awb awn awo awr awt aww baa bab ban bao bar bat baw bba bbb bbn bbo bbr bbt bbw bna bnb bnn bno bnr bnt bnw boa bob bon boo bor bot bow bra brb brn bro brr brt brw bta btb btn bto btr btt btw bwa bwb bwo bwr naa nab nan nao nar nat naw nba nbb nbn nbo nbr nbt nbw nna nnb nnn nno nnt nnw no- noa nob non noo nor not now nra nrb nrn nro nrr nrt nrw nta ntb ntn nto ntr ntt nwa nwb nwn nwo nwr nwt oaa oab oan oao oar oat oaw ob- oba obb obn obo obr obt obw on- ona onb onn ono onr ont oo- ooa oob oon ooo oor oot oow or- ora orb orn oro orr ort ot- ota otb otn oto otr ott otw owa owb own owo owt oww ra- raa rab ran rao rar rat raw rba rbb rbn rbo rbr rbt rbw rna rnb rnn rno rnr rnt rnw roa rob ron roo ror rot row rra rrb rrn rrr rrt rta rtb rtn rto rtr rtt rtw rwa rwb rwr taa tab tan tao tar tat taw tba tbb tbn tbo tbr tbt tna tnb tnn tno tnr tnt tnw to- toa tob ton too tor tot tow tra trb trn tro trr trt trw tta ttb ttn tto ttr ttt ttw twa twb twn two twr twt tww waa wab wan wao war wat waw wba wbb wbn wbo wbr wbt wbw wn- wna wnn wno wnt wnw woa wob won woo wor wot wow wr- wra wrn wro wrr wrt wrw wta wtb wtn wto wtr wtt wtw wwa wwn wwo wwt www