-er -ic -ol -up b-p b-u bbb bbc bbe bbi bbl bbo bbp bbr bbu bcb bcc bce bci bcl bco bcp bcr bcu be- beb bec bee bei bel beo bep ber beu bi- bib bic bie bii bil bio bip bir biu blb blc ble bli bll blo blp blr blu bob boc boe boi bol boo bop bor bou bpb bpc bpe bpi bpl bpo bpp bpr bpu brb bre bri brl bro brp brr bru bub buc bue bui bul buo bup bur buu c-- cbb cbc cbe cbi cbl cbo cbp cbr cbu ccb ccc cce cci ccl cco ccp ccr ccu ce- ceb cec cee cei cel ceo cep cer ceu ci- cib cic cie cii cil cio cip cir ciu cl- clb clc cle cli cll clo clp clr clu co- cob coc coe coi col coo cop cor cou cpb cpc cpe cpi cpl cpo cpp cpr cpu crb crc cre cri crl cro crp crr cru cub cuc cue cui cul cuo cup cur cuu ebb ebc ebe ebi ebl ebo ebp ebr ebu ec- ecb ecc ece eci ecl eco ecr ecu eeb eec eee eel eeo eep eer eib eic eie eii eil eio eip eir eiu elb elc ele eli ell elo elp elr elu eo- eob eoc eoe eoi eol eoo eop eor eou ep- epb epc epe epi epl epo epp epr epu erb erc ere eri erl ero erp err eru eu- eub euc eue eui eul eup eur ibb ibc ibe ibi ibl ibo ibp ibr ibu icb icc ice ici icl ico icp icr icu ie- iec iee iei iel iep ier iib iic iie iii iil iio iip iir iiu il- ilb ilc ile ili ill ilo ilp ilr ilu io- iob ioc ioe ioi iol ioo iop ior iou ipb ipc ipe ipi ipl ipo ipp ipr ipu ir- irb irc ire iri irl iro irp irr iru iu- iub iuc iue iui iup iur l-p lbb lbc lbe lbi lbl lbo lbp lbr lbu lcb lcc lce lci lcl lco lcp lcr lcu leb lec lee lei lel leo lep ler leu lib lic lie lii lil lio lip lir liu llb llc lle lli lll llo llp llr llu lob loc loe loi lol loo lop lor lou lpb lpc lpe lpi lpl lpo lpp lpr lpu lrb lrc lri lro lrp lrr lru lub luc lue lui lul luo lup lur luu o-i ob- obb obc obe obi obl obo obp obr obu oc- ocb occ oci ocl oco ocp ocr ocu oeb oec oee oei oel oeo oep oer oib oic oie oii oil oio oip oir oiu olb olc ole oli oll olo olp olu oo- oob ooc ooi ool ooo oop oor op- opb opc ope opi opl opo opp opr or- orb orc ore ori orl oro orp orr oru ou- ouc oue oui oul ouo oup our p-p pbb pbc pbe pbi pbl pbo pbp pbr pbu pcb pcc pce pci pcl pco pcp pcr pcu peb pec pee pei pel peo pep per peu pib pic pie pii pil pio pip pir piu plb plc ple pli pll plo plp plr plu pob poc poe poi pol poo pop por pou ppb ppc ppe ppi ppl ppo ppp ppr ppu prb prc pre pri prl pro prp prr pru pub puc pue pui pul pup pur puu rbb rbc rbe rbi rbl rbo rbp rbr rbu rcb rcc rce rci rcl rco rcp rcr rcu re- reb rec ree rei rel reo rep rer reu rib ric rie rii ril rio rip rir rlc rle rli rll rlo rlp rlr rlu rob roc roe roi rol roo rop ror rou rpb rpc rpe rpi rpl rpo rpp rpr rpu rrb rrc rri rrl rrp rrr rru rub ruc rue rui ruo rup rur ruu ubb ubc ube ubi ubl ubo ubp ubr ubu ucb ucc uce uci ucl uco ucp ucr ucu ueb uec uee uei uel uep uer uib uic uie uii uil uio uip uir uiu ulb ulc ule uli ull ulo ulp ulr ulu uob uoc uoe uol uoo uop uor up- upb upc upe upi upo upp upr upu ur- urb urc ure uri url uro urp urr uru uuc uue uur uuu