-er -ic c-- ccc ccd cce cci cck ccl ccr ccu cdc cdd cde cdi cdk cdl cdr cdu ce- cec ced cee cei cek cel cer ceu ci- cic cid cie cii cik cil cir ciu ckc ckd cki cl- clc cld cle cli clk cll clr clu crc crd cre cri crk crl crr cru cuc cud cue cui cuk cul cur cuu dcc dcd dce dci dck dcl dcr dcu ddc ddd dde ddi ddk ddl ddr ddu de- dec ded dee dei dek del der deu di- dic did die dii dik dil dir diu dkc dke dki dkk dkl dkr dku dl- dlc dld dle dli dlk dll dlr dlu drc drd dre dri drk drl drr dru duc dud due dui duk dul dur ec- ecc ecd ece eci eck ecl ecr ecu ed- edc edd ede edi edk edl edr edu eec eed eee eek eel eer eic eid eie eii eik eil eir eiu ekc ekd eke eki ekl ekr eku elc eld ele eli elk ell elr elu erc erd ere eri erk erl err eru eu- euc eud eue eui eul eur i-d icc icd ice ici ick icl icr icu idc idd ide idi idk idl idr idu ie- iec ied iee iei iek iel ier iic iid iie iii iil iir iiu ikc ike iki ikk ikl ikr iku il- ilc ild ile ili ilk ill ilr ilu ir- irc ird ire iri irk irl irr iru iu- iuc iud iue iui iur kcc kcd kce kci kck kcl kcr kcu kdc kde kdk kdl kdr kdu ke- kec ked kee kei kek kel ker kic kid kie kii kik kil kir kiu kkc kke kki kkk kkl kkr kku kl- klc kld kli klr klu krc krd kri krk krl krr kru kuc kud kue kui kuk kul kur kuu lcc lcd lce lci lck lcl lcr lcu ldc ldd lde ldi ldk ldl ldr ldu lec led lee lei lek lel ler leu lic lid lie lii lik lil lir liu lkl lkr llc lld lle lli llk lll llr llu lrc lrd lri lrk lrr lru luc lud lue lui luk lul lur luu rcc rcd rce rci rcl rcr rcu rdc rdd rde rdi rdl rdr rdu re- rec red ree rei rek rel rer reu ric rid rie rii rik ril rir rkc rke rkk rku rlc rld rle rli rll rlr rlu rrc rrd rri rrk rrl rrr rru ruc rud rue rui ruk rur ruu ucc ucd uce uci uck ucl ucr ucu udc udd ude udi udk udl udr udu uec ued uee uei uel uer uic uid uie uii uil uir uiu ukc uke uki ukk ukl ukr uku ulc uld ule uli ulk ull ulr ulu ur- urc urd ure uri urk url urr uru uuc uue uur uuu