-er -ol b-p bbb bbc bbe bbl bbo bbp bbr bbt bcb bcc bce bcl bco bcp bcr bct be- beb bec bee bel beo bep ber bet blb blc ble bll blo blp blr blt bob boc boe bol boo bop bor bot bpb bpc bpe bpl bpo bpp bpr bpt brb bre brl bro brp brr brt btb btc bte btl bto btp btr btt c-- cbb cbc cbe cbl cbo cbp cbr cbt ccb ccc cce ccl cco ccp ccr cct ce- ceb cec cee cel ceo cep cer cet cl- clb clc cle cll clo clp clr clt co- cob coc coe col coo cop cor cot cpb cpc cpe cpl cpo cpp cpr cpt crb crc cre crl cro crp crr crt ctb ctc cte ctl cto ctp ctr ctt ebb ebc ebe ebl ebo ebp ebr ebt ec- ecb ecc ece ecl eco ecr ect eeb eec eee eel eeo eep eer eet elb elc ele ell elo elp elr elt eo- eob eoc eoe eol eoo eop eor eot ep- epb epc epe epl epo epp epr ept erb erc ere erl ero erp err ert etb etc ete etl eto etp etr ett l-p lbb lbc lbe lbl lbo lbp lbr lbt lcb lcc lce lcl lco lcp lcr lct leb lec lee lel leo lep ler let llb llc lle lll llo llp llr llt lob loc loe lol loo lop lor lot lpb lpc lpe lpl lpo lpp lpr lpt lrb lrc lro lrp lrr lrt ltb ltc lte ltl lto ltp ltr ltt ob- obb obc obe obl obo obp obr obt oc- ocb occ ocl oco ocp ocr oct oeb oec oee oel oeo oep oer oet olb olc ole oll olo olp olt oo- oob ooc ool ooo oop oor oot op- opb opc ope opl opo opp opr opt or- orb orc ore orl oro orp orr ort ot- otb otc ote otl oto otp otr ott p-p pbb pbc pbe pbl pbo pbp pbr pbt pcb pcc pce pcl pco pcp pcr pct peb pec pee pel peo pep per pet plb plc ple pll plo plp plr plt pob poc poe pol poo pop por pot ppb ppc ppe ppl ppo ppp ppr ppt prb prc pre prl pro prp prr prt pt- ptb ptc pte ptl pto ptp ptr ptt rbb rbc rbe rbl rbo rbp rbr rbt rcb rcc rce rcl rco rcp rcr rct re- reb rec ree rel reo rep rer ret rlc rle rll rlo rlp rlr rlt rob roc roe rol roo rop ror rot rpb rpc rpe rpl rpo rpp rpr rpt rrb rrc rrl rrp rrr rrt rtb rtc rte rtl rto rtp rtr rtt tbb tbc tbe tbl tbo tbp tbr tbt tcb tcc tce tcl tco tcp tcr tct te- teb tec tee tel teo tep ter tet tlc tle tll tlo tlp tlr tlt to- tob toc toe tol too top tor tot tpb tpc tpe tpl tpo tpp tpr tpt trb trc tre trl tro trp trr trt ttb ttc tte ttl tto ttp ttr ttt