-er -ic -ol b-u bbb bbc bbd bbe bbi bbk bbl bbo bbr bbu bcb bcc bcd bce bci bck bcl bco bcr bcu bdb bdc bdd bde bdi bdk bdl bdo bdr bdu be- beb bec bed bee bei bek bel beo ber beu bi- bib bic bid bie bii bik bil bio bir biu bkb bkc bke bkk bkl bko bkr blb blc bld ble bli blk bll blo blr blu bob boc bod boe boi bok bol boo bor bou brb brd bre bri brk brl bro brr bru bub buc bud bue bui buk bul buo bur buu c-- cbb cbc cbd cbe cbi cbk cbl cbo cbr cbu ccb ccc ccd cce cci cck ccl cco ccr ccu cdb cdc cdd cde cdi cdk cdl cdo cdr cdu ce- ceb cec ced cee cei cek cel ceo cer ceu ci- cib cic cid cie cii cik cil cio cir ciu ckb ckc ckd cki cko cl- clb clc cld cle cli clk cll clo clr clu co- cob coc cod coe coi cok col coo cor cou crb crc crd cre cri crk crl cro crr cru cub cuc cud cue cui cuk cul cuo cur cuu dbb dbc dbd dbe dbi dbk dbl dbo dbr dbu dcb dcc dcd dce dci dck dcl dco dcr dcu ddb ddc ddd dde ddi ddk ddl ddo ddr ddu de- deb dec ded dee dei dek del deo der deu di- dib dic did die dii dik dil dio dir diu dkb dkc dke dki dkk dkl dko dkr dku dl- dlb dlc dld dle dli dlk dll dlo dlr dlu dob doc dod doe doi dok dol doo dor dou drb drc drd dre dri drk drl dro drr dru dub duc dud due dui duk dul duo dur ebb ebc ebd ebe ebi ebk ebl ebo ebr ebu ec- ecb ecc ecd ece eci eck ecl eco ecr ecu ed- edb edc edd ede edi edk edl edo edr edu eeb eec eed eee eek eel eeo eer eib eic eid eie eii eik eil eio eir eiu ekb ekc ekd eke eki ekl eko ekr eku elb elc eld ele eli elk ell elo elr elu eo- eob eoc eod eoe eoi eok eol eoo eor eou erb erc erd ere eri erk erl ero err eru eu- eub euc eud eue eui eul eur i-d ibb ibc ibd ibe ibi ibk ibl ibo ibr ibu icb icc icd ice ici ick icl ico icr icu idb idc idd ide idi idk idl ido idr idu ie- iec ied iee iei iek iel ier iib iic iid iie iii iil iio iir iiu ikb ikc ike iki ikk ikl iko ikr iku il- ilb ilc ild ile ili ilk ill ilo ilr ilu io- iob ioc iod ioe ioi iol ioo ior iou ir- irb irc ird ire iri irk irl iro irr iru iu- iub iuc iud iue iui iur kbb kbc kbd kbe kbi kbk kbl kbo kbr kbu kcb kcc kcd kce kci kck kcl kcr kcu kdb kdc kde kdk kdl kdo kdr kdu ke- keb kec ked kee kei kek kel keo ker kib kic kid kie kii kik kil kio kir kiu kkb kkc kke kki kkk kkl kkr kku kl- klb klc kld kli klo klr klu kob koc kod koe koi kok kol koo kor kou krc krd kri krk krl kro krr kru kub kuc kud kue kui kuk kul kur kuu lbb lbc lbd lbe lbi lbk lbl lbo lbr lbu lcb lcc lcd lce lci lck lcl lco lcr lcu ldb ldc ldd lde ldi ldk ldl ldo ldr ldu leb lec led lee lei lek lel leo ler leu lib lic lid lie lii lik lil lio lir liu lkb lkl lkr llb llc lld lle lli llk lll llo llr llu lob loc lod loe loi lok lol loo lor lou lrb lrc lrd lri lrk lro lrr lru lub luc lud lue lui luk lul luo lur luu o-i ob- obb obc obd obe obi obk obl obo obr obu oc- ocb occ ocd oci ock ocl oco ocr ocu odb odc odd ode odi odl odo odr odu oeb oec oed oee oei oel oeo oer oib oic oid oie oii oik oil oio oir oiu okb okc okd oke oki okk okl oko okr oku olb olc old ole oli olk oll olo olu oo- oob ooc ood ooi ook ool ooo oor or- orb orc ord ore ori ork orl oro orr oru ou- ouc oud oue oui ouk oul ouo our rbb rbc rbd rbe rbi rbk rbl rbo rbr rbu rcb rcc rcd rce rci rcl rco rcr rcu rdb rdc rdd rde rdi rdl rdo rdr rdu re- reb rec red ree rei rek rel reo rer reu rib ric rid rie rii rik ril rio rir rkb rkc rke rkk rko rku rlc rld rle rli rll rlo rlr rlu rob roc rod roe roi rok rol roo ror rou rrb rrc rrd rri rrk rrl rrr rru rub ruc rud rue rui ruk ruo rur ruu ubb ubc ube ubi ubk ubl ubo ubr ubu ucb ucc ucd uce uci uck ucl uco ucr ucu udb udc udd ude udi udk udl udo udr udu ueb uec ued uee uei uel uer uib uic uid uie uii uil uio uir uiu ukb ukc uke uki ukk ukl ukr uku ulb ulc uld ule uli ulk ull ulo ulr ulu uob uoc uod uoe uok uol uoo uor ur- urb urc urd ure uri urk url uro urr uru uuc uue uur uuu