-al -ol -th a-a a-b a-c a-t aaa aab aac aad aah aal aao aat ab- aba abb abc abd abh abl abo abt ac- aca acb acc acd ach acl aco act ad- ada adb adc add adh adl ado adt aha ahb ahc ahd ahh ahl aho aht al- ala alb alc ald alh all alo alt aoa aob aoc aod aoh aol aoo aot at- ata atb atc atd ath atl ato att baa bab bac bad bah bal bao bat bba bbb bbc bbd bbh bbl bbo bbt bca bcb bcc bcd bch bcl bco bct bda bdb bdc bdd bdh bdl bdo bdt bha bhb bhc bhd bhh bhl bho bht bla blb blc bld blh bll blo blt boa bob boc bod boh bol boo bot bta btb btc btd bth btl bto btt c-- caa cab cac cad cah cal cao cat cba cbb cbc cbd cbh cbl cbo cbt cca ccb ccc ccd cch ccl cco cct cda cdb cdc cdd cdh cdl cdo cdt ch- cha chb chc chd chh chl cho cht cl- cla clb clc cld clh cll clo clt co- coa cob coc cod coh col coo cot cta ctb ctc ctd cth ctl cto ctt daa dab dac dad dah dal dao dat dba dbb dbc dbd dbh dbl dbo dbt dca dcb dcc dcd dcl dco dct dda ddb ddc ddd ddh ddl ddo ddt dh- dha dhb dhc dhd dhh dhl dho dht dl- dla dlb dlc dld dlh dll dlo dlt doa dob doc dod doh dol doo dot dta dtb dtc dtd dth dtl dto dtt haa hab hac had hah hal hao hat hba hbb hbc hbd hbh hbl hbo hbt hca hcb hcc hcd hch hcl hco hct hda hdb hdc hdd hdh hdl hdo hdt hha hhb hhc hhd hhh hhl hho hht hla hlb hlc hld hlh hll hlo hlt hoa hob hoc hod hoh hol hoo hot hta htb htc htd hth htl hto htt la- laa lab lac lad lah lal lao lat lba lbb lbc lbd lbh lbl lbo lbt lca lcb lcc lcd lch lcl lco lct lda ldb ldc ldd ldh ldl ldo ldt lha lhb lhc lhd lhh lho lht lla llb llc lld lll llo llt loa lob loc lod loh lol loo lot lta ltb ltc ltd lth ltl lto ltt oaa oab oac oad oah oal oao oat ob- oba obb obc obd obh obl obo obt oc- oca ocb occ ocd och ocl oco oct oda odb odc odd odh odl odo odt oha ohc ohd ohh ohl oho oht ola olb olc old oll olo olt oo- ooa oob ooc ood ooh ool ooo oot ot- ota otb otc otd oth otl oto ott taa tab tac tad tah tal tao tat tba tbb tbc tbd tbh tbl tbo tbt tca tcb tcc tcd tch tcl tco tct tda tdb tdc tdd tdh tdl tdo tdt th- tha thb thc thd thh thl tho tht tla tlc tld tlh tll tlo tlt to- toa tob toc tod toh tol too tot tta ttb ttc ttd tth ttl tto ttt