-er -ic c-- ccc cce cci cck cco ccp ccr cct ccv ce- cec cee cei cek ceo cep cer cet cev ci- cic cie cii cik cio cip cir cit civ ckc cki cko ckt co- coc coe coi cok coo cop cor cot cov cpc cpe cpi cpk cpo cpp cpr cpt cpv crc cre cri crk cro crp crr crt crv ctc cte cti ctk cto ctp ctr ctt ctv cvc cve cvi cvk cvo cvp cvr cvt cvv ec- ecc ece eci eck eco ecr ect ecv eec eee eek eeo eep eer eet eev eic eie eii eik eio eip eir eit eiv ekc eke eki eko ekp ekr ekt ekv eo- eoc eoe eoi eok eoo eop eor eot ep- epc epe epi epo epp epr ept erc ere eri erk ero erp err ert erv etc ete eti etk eto etp etr ett etv evc eve evi evo evp evr evt evv i-v icc ice ici ick ico icp icr ict icv ie- iec iee iei iek iep ier iet iev iic iie iii iio iip iir iit ikc ike iki ikk iko ikr ikt ikv io- ioc ioe ioi ioo iop ior iot iov ipc ipe ipi ipo ipp ipr ipt ipv ir- irc ire iri irk iro irp irr irt irv itc ite iti itk ito itp itt itv ivc ive ivi ivo ivp ivr ivt ivv k-t kcc kce kci kck kcp kcr kct ke- kec kee kei kek keo kep ker ket kev kic kie kii kik kio kip kir kit kiv kkc kke kki kkk kkp kkr kkt kkv koc koe koi kok koo kop kor kot kpc kpe kpi kpk kpo kpp kpr kpt kpv krc kri krk kro krp krr krt krv ktc kte ktk kto ktp ktr ktt ktv kvi kvk kvo kvp kvr kvv o-i oc- occ oci ock oco ocp ocr oct ocv oec oee oei oeo oep oer oet oic oie oii oik oio oip oir oit oiv okc oke oki okk oko okp okr oo- ooc ooi ook ooo oop oor oot oov op- opc ope opi opk opo opp opr opt opv or- orc ore ori ork oro orp orr ort orv ot- otc ote oti otk oto otp otr ott otv ov- ovc ove ovi ovo ovp ovv p-p pcc pce pci pck pco pcp pcr pct pcv pec pee pei pek peo pep per pet pev pic pie pii pik pio pip pir pit piv pkc pke pki pko pkp pkr pkt poc poe poi pok poo pop por pot pov ppc ppe ppi ppk ppo ppp ppr ppt ppv prc pre pri prk pro prp prr prt prv pt- ptc pte pti ptk pto ptp ptr ptt ptv pvc pve pvi pvk pvo pvp pvr pvt pvv rcc rce rci rco rcp rcr rct rcv re- rec ree rei rek reo rep rer ret rev ric rie rii rik rio rip rir rit riv rkc rke rkk rko rkp rkt rkv roc roe roi rok roo rop ror rot rov rpc rpe rpi rpk rpo rpp rpr rpt rpv rrc rri rrk rrp rrr rrt rtc rte rti rtk rto rtp rtr rtt rtv rvc rve rvi rvo rvp rvr rvt rvv tcc tce tci tck tco tcp tcr tct tcv te- tec tee tei tek teo tep ter tet tev tic tie tii tik tio tip tir tit tiv tkc tke tkk tko tkp tkr tkt to- toc toe toi tok too top tor tot tov tpc tpe tpi tpk tpo tpp tpr tpt tpv trc tre tri trk tro trp trr trt trv ttc tte tti ttk tto ttp ttr ttt ttv tvc tve tvi tvk tvo tvp tvr tvt v-e vcc vce vci vco vcp vcr vct vec vee vei vek veo vep ver vet vi- vic vie vii vik vio vip vir vit viv vkp vkt voc voe voi vok voo vop vor vot vov vpc vpe vpi vpk vpo vpp vpr vpt vrc vre vri vrk vrp vrr vrt vtc vte vti vtk vto vtr vtt vtv vvc vvi vvo vvr vvt vvv