-ol bbb bbc bbd bbe bbk bbl bbo bbt bcb bcc bcd bce bck bcl bco bct bdb bdc bdd bde bdk bdl bdo bdt be- beb bec bed bee bek bel beo bet bkb bkc bke bkk bkl bko bkt blb blc bld ble blk bll blo blt bob boc bod boe bok bol boo bot btb btc btd bte btk btl bto btt c-- cbb cbc cbd cbe cbk cbl cbo cbt ccb ccc ccd cce cck ccl cco cct cdb cdc cdd cde cdk cdl cdo cdt ce- ceb cec ced cee cek cel ceo cet ckb ckc ckd cko ckt cl- clb clc cld cle clk cll clo clt co- cob coc cod coe cok col coo cot ctb ctc ctd cte ctk ctl cto ctt dbb dbc dbd dbe dbk dbl dbo dbt dcb dcc dcd dce dck dcl dco dct ddb ddc ddd dde ddk ddl ddo ddt de- deb dec ded dee dek del deo det dkb dkc dke dkk dkl dko dkt dl- dlb dlc dld dle dlk dll dlo dlt dob doc dod doe dok dol doo dot dtb dtc dtd dte dtk dtl dto dtt ebb ebc ebd ebe ebk ebl ebo ebt ec- ecb ecc ecd ece eck ecl eco ect ed- edb edc edd ede edk edl edo edt eeb eec eed eee eek eel eeo eet ekb ekc ekd eke ekl eko ekt elb elc eld ele elk ell elo elt eo- eob eoc eod eoe eok eol eoo eot etb etc etd ete etk etl eto ett k-t kbb kbc kbd kbe kbk kbl kbo kcb kcc kcd kce kck kcl kct kdb kdc kde kdk kdl kdo kdt ke- keb kec ked kee kek kel keo ket kkb kkc kke kkk kkl kkt kl- klb klc kld klo klt kob koc kod koe kok kol koo kot ktb ktc kte ktk ktl kto ktt lbb lbc lbd lbe lbk lbl lbo lbt lcb lcc lcd lce lck lcl lco lct ldb ldc ldd lde ldk ldl ldo ldt leb lec led lee lek lel leo let lkb lkl lkt llb llc lld lle llk lll llo llt lob loc lod loe lok lol loo lot ltb ltc ltd lte ltk ltl lto ltt ob- obb obc obd obe obk obl obo obt oc- ocb occ ocd ock ocl oco oct odb odc odd ode odl odo odt oeb oec oed oee oel oeo oet okb okc okd oke okk okl oko olb olc old ole olk oll olo olt oo- oob ooc ood ook ool ooo oot ot- otb otc otd ote otk otl oto ott tbb tbc tbd tbe tbk tbl tbo tbt tcb tcc tcd tce tck tcl tco tct tdb tdc tdd tde tdk tdl tdo tdt te- teb tec ted tee tek tel teo tet tkb tkc tke tkk tkl tko tkt tlc tld tle tlk tll tlo tlt to- tob toc tod toe tok tol too tot ttb ttc ttd tte ttk ttl tto ttt

bbbb bbdd bbdo bbeb bbet bblb bcbc bccc bccl bcde bcec bcet bctc bdbc bddc bdle bebb bebe bebo beck bede bedl bedo beeb beed beek beel beet beke beko beld bele belk bell belo belt beo- beod beok beot betc bete beto bett blbt bldc bleb bled blee blek bleo blet blkb blkd blob bloc blod blok bloo blot bobb bobe bobo boce bock boco bodb bode bodo boec boee boel boeo boet boke boko bold bole bolk boll bolo bolt boob booc bood booe book bool boot botb botd bote boto bott btcc btcl btdt btec btek btob bttb c-bo c-cd cbbc cbcc cbce cbcl cbct cbdb cbdc cbdo cbec cbee cbet cbkl cbko cblb cblc cbol cbot cbtc cbtl ccbc cccb cccc cccl ccdc cced ccee ccel cclc ccob ccoc ccod cctb cctc cctl cctt cd-e cddb cddl cdec cdot cec- cece ceco cect cedd cede cedo cedt ceeb ceec ceel ceke cel- celc cele cell celo celt ceol cet- cete ceto ckbc ckbe ckck ckcl ckco ckdo ckob ckoc ckoo ckot cktb clcd cldc clec cled clee clek cleo clet clob clod cloe clok cloo clot cltb cltc cobb cobe cobo coce cock coco coct codd code codl coed coel cok- coke coko col- colb cold cole colk coll colo colt coob cood cook cool coot cotb cotc cote coto cott ctec ctle ctol ctot d-bo dbcc dbtt dcbc dccb dccc dccl dcct dcdb dctc dddd ddlc ddoc ddot debe debt dec- decc decd dece deck decl deco dect dedd dede dedo deeb deed deek deel deet dek- deke deld dele delk dell delo delt deol dete detk deto dkdc dlbd dlco dobb dobe dobl doce dock doco doct dod- dodd dode dodo doek doel doke doko dold dole dolk doll dolo dolt doob dood dook dool doot dotd dote dotk doto dott dtcc dted dtek dtle dtot e-cl ebbc ebbo ebcc ebed ebel eboe ebol eboo ecbc ecbe eccb eccc ecce eccl ecco ecct ecdc ecdl eced ecko eclt eco- ecod ecol ecot ect- ectc ecto eddc edde eddo ede- edel edle edoc edod eede eeee eeke eele eeoc eetc eete ekco ekeb eked ekek eket el-b elbe elbo elcb elce elco elde elec eled elee elek eleo elet elke elko elle ello elod elok elte elto eocd eode eole eolo eotc eotd eoto etbc etcc etco etec etee etel etoe etok ette etto k-lo kbbb kbbc kbbd kbbe kbbk kbbl kbbo kbbt kbcb kbce kbck kbcl kbco kbct kbdb kbde kbdl kbdo kbeb kbec kbed kbee kbek kbel kbeo kbet kbkb kbkk kbkl kbko kblb kbld kble kbll kblo kblt kbob kboc kbod kboe kbok kboo kbot kbtb kbtc kbte kbtk kbtl kbto kbtt kcbc kcbd kcbk kcbl kccb kccc kccd kcck kccl kcct kcdc kcdd kceb kcec kced kcee kcel kceo kcet kckc kckk kckl kcko kclc kcle kclk kcll kclt kcob kcoe kcol kcot kctb kctc kcte kcto kdbb kdbl kdcc kdcd kdce kdco kddb kddc kddd