-al -ol -th a-a a-b a-c a-t aaa aab aac aad aah aal aao aar aat ab- aba abb abc abd abh abl abo abr abt ac- aca acb acc acd ach acl aco acr act ad- ada adb adc add adh adl ado adr adt aha ahb ahc ahd ahh ahl aho ahr aht al- ala alb alc ald alh all alo alr alt aoa aob aoc aod aoh aol aoo aor aot ar- ara arb arc ard arh arl aro arr art at- ata atb atc atd ath atl ato atr att baa bab bac bad bah bal bao bar bat bba bbb bbc bbd bbh bbl bbo bbr bbt bca bcb bcc bcd bch bcl bco bcr bct bda bdb bdc bdd bdh bdl bdo bdr bdt bha bhb bhc bhd bhh bhl bho bhr bht bla blb blc bld blh bll blo blr blt boa bob boc bod boh bol boo bor bot bra brb brd brh brl bro brr brt bta btb btc btd bth btl bto btr btt c-- caa cab cac cad cah cal cao car cat cba cbb cbc cbd cbh cbl cbo cbr cbt cca ccb ccc ccd cch ccl cco ccr cct cda cdb cdc cdd cdh cdl cdo cdr cdt ch- cha chb chc chd chh chl cho chr cht cl- cla clb clc cld clh cll clo clr clt co- coa cob coc cod coh col coo cor cot cra crb crc crd crh crl cro crr crt cta ctb ctc ctd cth ctl cto ctr ctt daa dab dac dad dah dal dao dar dat dba dbb dbc dbd dbh dbl dbo dbr dbt dca dcb dcc dcd dcl dco dcr dct dda ddb ddc ddd ddh ddl ddo ddr ddt dh- dha dhb dhc dhd dhh dhl dho dhr dht dl- dla dlb dlc dld dlh dll dlo dlr dlt doa dob doc dod doh dol doo dor dot dra drb drc drd drl dro drr drt dta dtb dtc dtd dth dtl dto dtr dtt haa hab hac had hah hal hao har hat hba hbb hbc hbd hbh hbl hbo hbr hbt hca hcb hcc hcd hch hcl hco hcr hct hda hdb hdc hdd hdh hdl hdo hdr hdt hha hhb hhc hhd hhh hhl hho hhr hht hla hlb hlc hld hlh hll hlo hlr hlt hoa hob hoc hod hoh hol hoo hor hot hr- hra hrb hrc hrd hrh hrl hro hrr hrt hta htb htc htd hth htl hto htr htt la- laa lab lac lad lah lal lao lar lat lba lbb lbc lbd lbh lbl lbo lbr lbt lca lcb lcc lcd lch lcl lco lcr lct lda ldb ldc ldd ldh ldl ldo ldr ldt lha lhb lhc lhd lhh lho lhr lht lla llb llc lld lll llo llr llt loa lob loc lod loh lol loo lor lot lra lrb lrc lrd lrh lro lrr lrt lta ltb ltc ltd lth ltl lto ltr ltt oaa oab oac oad oah oal oao oar oat ob- oba obb obc obd obh obl obo obr obt oc- oca ocb occ ocd och ocl oco ocr oct oda odb odc odd odh odl odo odr odt oha ohc ohd ohh ohl oho ohr oht ola olb olc old oll olo olt oo- ooa oob ooc ood ooh ool ooo oor oot or- ora orb orc ord orh orl oro orr ort ot- ota otb otc otd oth otl oto otr ott ra- raa rab rac rad rah ral rao rar rat rba rbb rbc rbd rbh rbl rbo rbr rbt rca rcb rcc rcd rch rcl rco rcr rct rda rdb rdc rdd rdh rdl rdo rdr rdt rh- rha rhb rhc rhd rhh rhl rho rhr rht rla rlc rld rlh rll rlo rlr rlt roa rob roc rod roh rol roo ror rot rra rrb rrc rrd rrh rrl rrr rrt rta rtb rtc rtd rtl rto rtr rtt taa tab tac tad tah tal tao tar tat tba tbb tbc tbd tbh tbl tbo tbr tbt tca tcb tcc tcd tch tcl tco tcr tct tda tdb tdc tdd tdh tdl tdo tdr tdt th- tha thb thc thd thh thl tho thr tht tla tlc tld tlh tll tlo tlr tlt to- toa tob toc tod toh tol too tor tot tra trb trc trd trh trl tro trr trt tta ttb ttc ttd tth ttl tto ttr ttt