-th a-a a-b a-i a-t aaa aab aad aah aai aao aar aat ab- aba abb abd abh abi abo abr abt ad- ada adb add adh adi ado adr adt aha ahb ahd ahh ahi aho ahr aht ai- aia aib aid aih aii aio air ait aoa aob aod aoh aoi aoo aor aot ar- ara arb ard arh ari aro arr art at- ata atb atd ath ati ato atr att baa bab bad bah bai bao bar bat bba bbb bbd bbh bbi bbo bbr bbt bda bdb bdd bdh bdi bdo bdr bdt bha bhb bhd bhh bhi bho bhr bht bi- bia bib bid bih bii bio bir bit boa bob bod boh boi boo bor bot bra brb brd brh bri bro brr brt bta btb btd bth bti bto btr btt daa dab dad dah dai dao dar dat dba dbb dbd dbh dbi dbo dbr dbt dda ddb ddd ddh ddi ddo ddr ddt dh- dha dhb dhd dhh dhi dho dhr dht di- dia dib did dih dii dio dir dit doa dob dod doh doi doo dor dot dra drb drd dri dro drr drt dta dtb dtd dth dti dto dtr dtt h-i haa hab had hah hai hao har hat hba hbb hbd hbh hbi hbo hbr hbt hda hdb hdd hdh hdi hdo hdr hdt hha hhb hhd hhh hhi hho hhr hht hia hib hid hih hii hio hir hit hoa hob hod hoh hoi hoo hor hot hr- hra hrb hrd hrh hri hro hrr hrt hta htb htd hth hti hto htr htt i-d ia- iaa iab iad iah iai iao iar iat iba ibb ibd ibh ibi ibo ibr ibt ida idb idd idh idi ido idr idt iha ihb ihd ihh ihi iho ihr iht iia iib iid iih iii iio iir iit io- ioa iob iod ioh ioi ioo ior iot ir- ira irb ird iri iro irr irt ita itb itd ith iti ito itt o-i oaa oab oad oah oai oao oar oat ob- oba obb obd obh obi obo obr obt oda odb odd odh odi odo odr odt oha ohd ohh ohi oho ohr oht oia oib oid oii oio oir oit oo- ooa oob ood ooh ooi ooo oor oot or- ora orb ord orh ori oro orr ort ot- ota otb otd oth oti oto otr ott ra- raa rab rad rah rai rao rar rat rba rbb rbd rbh rbi rbo rbr rbt rda rdb rdd rdh rdi rdo rdr rdt rh- rha rhb rhd rhh rhi rho rhr rht ria rib rid rih rii rio rir rit roa rob rod roh roi roo ror rot rra rrb rrd rrh rri rrr rrt rta rtb rtd rti rto rtr rtt taa tab tad tah tai tao tar tat tba tbb tbd tbh tbi tbo tbr tbt tda tdb tdd tdh tdi tdo tdr tdt th- tha thb thd thh thi tho thr tht tia tib tid tih tii tio tir tit to- toa tob tod toh toi too tor tot tra trb trd trh tri tro trr trt tta ttb ttd tth tti tto ttr ttt