-er -ol -th bbb bbe bbh bbk bbl bbo bbr bbt be- beb bee beh bek bel beo ber bet bhb bhe bhh bhk bhl bho bhr bht bkb bke bkk bkl bko bkr bkt blb ble blh blk bll blo blr blt bob boe boh bok bol boo bor bot brb bre brh brk brl bro brr brt btb bte bth btk btl bto btr btt ebb ebe ebh ebk ebl ebo ebr ebt eeb eee eek eel eeo eer eet ehb ehe ehh ehl eho ehr eht ekb eke ekh ekl eko ekr ekt elb ele elh elk ell elo elr elt eo- eob eoe eoh eok eol eoo eor eot erb ere erh erk erl ero err ert etb ete eth etk etl eto etr ett hbb hbe hbh hbk hbl hbo hbr hbt he- heb hee heh hek hel heo her het hhb hhe hhh hhk hhl hho hhr hht hkb hkh hkk hkl hko hkr hkt hlb hle hlh hll hlo hlr hlt hob hoe hoh hok hol hoo hor hot hr- hrb hre hrh hrk hrl hro hrr hrt htb hte hth htk htl hto htr htt k-t kbb kbe kbh kbk kbl kbo kbr ke- keb kee keh kek kel keo ker ket khe khh khk kho khr kkb kke kkh kkk kkl kkr kkt kl- klb klh klo klr klt kob koe koh kok kol koo kor kot krk krl kro krr krt ktb kte kth ktk ktl kto ktr ktt lbb lbe lbh lbk lbl lbo lbr lbt leb lee leh lek lel leo ler let lhb lhh lhk lho lhr lht lkb lkh lkl lkr lkt llb lle llk lll llo llr llt lob loe loh lok lol loo lor lot lrb lrh lrk lro lrr lrt ltb lte lth ltk ltl lto ltr ltt ob- obb obe obh obk obl obo obr obt oeb oee oeh oel oeo oer oet ohe ohh ohl oho ohr oht okb oke okk okl oko okr olb ole olk oll olo olt oo- oob ooh ook ool ooo oor oot or- orb ore orh ork orl oro orr ort ot- otb ote oth otk otl oto otr ott rbb rbe rbh rbk rbl rbo rbr rbt re- reb ree reh rek rel reo rer ret rh- rhb rhe rhh rhl rho rhr rht rkb rke rkk rko rkt rle rlh rll rlo rlr rlt rob roe roh rok rol roo ror rot rrb rrh rrk rrl rrr rrt rtb rte rtk rtl rto rtr rtt tbb tbe tbh tbk tbl tbo tbr tbt te- teb tee teh tek tel teo ter tet th- thb the thh thk thl tho thr tht tkb tke tkk tkl tko tkr tkt tle tlh tlk tll tlo tlr tlt to- tob toe toh tok tol too tor tot trb tre trh trk trl tro trr trt ttb tte tth ttk ttl tto ttr ttt