a-a a-b aaa aab aad aan aao aar aaw ab- aba abb abd abn abo abr abw ad- ada adb add adn ado adr adw an- ana anb and ann ano anr aoa aob aod aon aoo aor aow ar- ara arb ard arn aro arr arw aw- awa awb awd awn awo awr aww baa bab bad ban bao bar baw bba bbb bbd bbn bbo bbr bbw bda bdb bdd bdo bdr bdw bna bnb bnd bnn bno bnr bnw boa bob bod bon boo bor bow bra brb brd brn bro brr brw bwa bwb bwd bwo bwr daa dab dad dan dao dar daw dba dbb dbd dbn dbo dbr dda ddb ddd ddn ddo ddr ddw dna dnb dnd dnn dno dnr dnw doa dob dod don doo dor dow dra drb drd drn dro drr drw dwa dwb dwn dwo dwr dww naa nab nad nan nao nar naw nba nbb nbd nbn nbo nbr nbw nda ndb ndd ndn ndo ndr nna nnb nnn nno nnw no- noa nob nod non noo nor now nra nrb nrd nrn nro nrr nrw nwa nwb nwd nwn nwo nwr oaa oab oad oan oao oar oaw ob- oba obb obd obn obo obr obw oda odb odd odn odo odr on- ona onb ond onn ono onr oo- ooa oob ood oon ooo oor oow or- ora orb ord orn oro orr owa owb owd own owo oww ra- raa rab rad ran rao rar raw rba rbb rbd rbn rbo rbr rbw rda rdb rdd rdn rdo rdr rna rnb rnd rnn rno rnr rnw roa rob rod ron roo ror row rra rrb rrd rrn rrr rwa rwb rwd rwr waa wab wad wan wao war waw wba wbb wbd wbn wbo wbr wbw wda wdb wdr wn- wna wnd wnn wno wnw woa wob wod won woo wor wow wr- wra wrd wrn wro wrr wrw wwa wwd wwn wwo www