-th a-a a-b a-t aaa aab aad aah aan aao aar aat ab- aba abb abd abh abn abo abr abt ad- ada adb add adh adn ado adr adt aha ahb ahd ahh ahn aho ahr aht an- ana anb and anh ann ano anr ant aoa aob aod aoh aon aoo aor aot ar- ara arb ard arh arn aro arr art at- ata atb atd ath atn ato atr att baa bab bad bah ban bao bar bat bba bbb bbd bbh bbn bbo bbr bbt bda bdb bdd bdh bdo bdr bdt bha bhb bhd bhh bho bhr bht bna bnb bnd bnn bno bnr bnt boa bob bod boh bon boo bor bot bra brb brd brh brn bro brr brt bta btb btd bth btn bto btr btt daa dab dad dah dan dao dar dat dba dbb dbd dbh dbn dbo dbr dbt dda ddb ddd ddh ddn ddo ddr ddt dh- dha dhb dhd dhh dho dhr dht dna dnb dnd dnh dnn dno dnr dnt doa dob dod doh don doo dor dot dra drb drd drn dro drr drt dta dtb dtd dth dtn dto dtr dtt haa hab had hah han hao har hat hba hbb hbd hbh hbn hbo hbr hbt hda hdb hdd hdh hdn hdo hdr hdt hha hhb hhd hhh hhn hho hhr hht hna hnb hnd hnh hnn hno hnt hoa hob hod hoh hon hoo hor hot hr- hra hrb hrd hrh hrn hro hrr hrt hta htb htd hth htn hto htr htt naa nab nad nah nan nao nar nat nba nbb nbd nbn nbo nbr nbt nda ndb ndd ndh ndn ndo ndr ndt nha nhb nhd nhh nhn nhr nht nna nnb nnh nnn nno nnt no- noa nob nod noh non noo nor not nra nrb nrd nrn nro nrr nrt nta ntb ntd nth ntn nto ntr ntt oaa oab oad oah oan oao oar oat ob- oba obb obd obh obn obo obr obt oda odb odd odh odn odo odr odt oha ohd ohh ohn oho ohr oht on- ona onb ond onh onn ono onr ont oo- ooa oob ood ooh oon ooo oor oot or- ora orb ord orh orn oro orr ort ot- ota otb otd oth otn oto otr ott ra- raa rab rad rah ran rao rar rat rba rbb rbd rbh rbn rbo rbr rbt rda rdb rdd rdh rdn rdo rdr rdt rh- rha rhb rhd rhh rhn rho rhr rht rna rnb rnd rnh rnn rno rnr rnt roa rob rod roh ron roo ror rot rra rrb rrd rrh rrn rrr rrt rta rtb rtd rtn rto rtr rtt taa tab tad tah tan tao tar tat tba tbb tbd tbh tbn tbo tbr tbt tda tdb tdd tdh tdn tdo tdr tdt th- tha thb thd thh thn tho thr tht tna tnb tnd tnh tnn tno tnr tnt to- toa tob tod toh ton too tor tot tra trb trd trh trn tro trr trt tta ttb ttd tth ttn tto ttr ttt