-er -ic c-- ccc ccd cce cci cck cco ccr cct ccu cdc cdd cde cdi cdk cdo cdr cdt cdu ce- cec ced cee cei cek ceo cer cet ceu ci- cic cid cie cii cik cio cir cit ciu ckc ckd cki cko ckt co- coc cod coe coi cok coo cor cot cou crc crd cre cri crk cro crr crt cru ctc ctd cte cti ctk cto ctr ctt ctu cuc cud cue cui cuk cuo cur cut cuu dcc dcd dce dci dck dco dcr dct dcu ddc ddd dde ddi ddk ddo ddr ddt ddu de- dec ded dee dei dek deo der det deu di- dic did die dii dik dio dir dit diu dkc dke dki dkk dko dkr dkt dku doc dod doe doi dok doo dor dot dou drc drd dre dri drk dro drr drt dru dtc dtd dte dti dtk dto dtr dtt dtu duc dud due dui duk duo dur dut ec- ecc ecd ece eci eck eco ecr ect ecu ed- edc edd ede edi edk edo edr edt edu eec eed eee eek eeo eer eet eic eid eie eii eik eio eir eit eiu ekc ekd eke eki eko ekr ekt eku eo- eoc eod eoe eoi eok eoo eor eot eou erc erd ere eri erk ero err ert eru etc etd ete eti etk eto etr ett etu eu- euc eud eue eui eur eut i-d icc icd ice ici ick ico icr ict icu idc idd ide idi idk ido idr idt idu ie- iec ied iee iei iek ier iet iic iid iie iii iio iir iit iiu ikc ike iki ikk iko ikr ikt iku io- ioc iod ioe ioi ioo ior iot iou ir- irc ird ire iri irk iro irr irt iru itc itd ite iti itk ito itt itu iu- iuc iud iue iui iur iut k-t kcc kcd kce kci kck kcr kct kcu kdc kde kdk kdo kdr kdt kdu ke- kec ked kee kei kek keo ker ket kic kid kie kii kik kio kir kit kiu kkc kke kki kkk kkr kkt kku koc kod koe koi kok koo kor kot kou krc krd kri krk kro krr krt kru ktc kte ktk kto ktr ktt ktu kuc kud kue kui kuk kur kut kuu o-i oc- occ ocd oci ock oco ocr oct ocu odc odd ode odi odo odr odt odu oec oed oee oei oeo oer oet oic oid oie oii oik oio oir oit oiu okc okd oke oki okk oko okr oku oo- ooc ood ooi ook ooo oor oot or- orc ord ore ori ork oro orr ort oru ot- otc otd ote oti otk oto otr ott otu ou- ouc oud oue oui ouk ouo our out rcc rcd rce rci rco rcr rct rcu rdc rdd rde rdi rdo rdr rdt rdu re- rec red ree rei rek reo rer ret reu ric rid rie rii rik rio rir rit rkc rke rkk rko rkt rku roc rod roe roi rok roo ror rot rou rrc rrd rri rrk rrr rrt rru rtc rtd rte rti rtk rto rtr rtt rtu ruc rud rue rui ruk ruo rur rut ruu tcc tcd tce tci tck tco tcr tct tcu tdc tdd tde tdi tdk tdo tdr tdt tdu te- tec ted tee tei tek teo ter tet teu tic tid tie tii tik tio tir tit tiu tkc tke tkk tko tkr tkt to- toc tod toe toi tok too tor tot tou trc trd tre tri trk tro trr trt tru ttc ttd tte tti ttk tto ttr ttt ttu tuc tud tue tui tuk tuo tur tut tuu ucc ucd uce uci uck uco ucr uct ucu udc udd ude udi udk udo udr udt udu uec ued uee uei uer uet uic uid uie uii uio uir uit uiu ukc uke uki ukk ukr uku uoc uod uoe uok uoo uor uot ur- urc urd ure uri urk uro urr urt uru utc utd ute uti utk uto utr utt utu uuc uue uur uut uuu