-er -ic c-- ccc cce cch cci cck cco ccr ccv ce- cec cee ceh cei cek ceo cer cev ch- chc che chh chi chk cho chr chv ci- cic cie cih cii cik cio cir civ ckc ckh cki cko co- coc coe coh coi cok coo cor cov crc cre crh cri crk cro crr crv cvc cve cvh cvi cvk cvo cvr cvv ec- ecc ece ech eci eck eco ecr ecv eec eee eek eeo eer eev ehc ehe ehh ehi eho ehr ehv eic eie eii eik eio eir eiv ekc eke ekh eki eko ekr ekv eo- eoc eoe eoh eoi eok eoo eor erc ere erh eri erk ero err erv evc eve evh evi evo evr evv h-i hcc hce hch hci hck hco hcr hcv he- hec hee heh hei hek heo her hev hhc hhe hhh hhi hhk hho hhr hhv hic hie hih hii hik hio hir hiv hkh hki hkk hko hkr hoc hoe hoh hoi hok hoo hor hov hr- hrc hre hrh hri hrk hro hrr hrv hv- hvc hvk hvo hvr hvv i-v icc ice ich ici ick ico icr icv ie- iec iee iei iek ier iev ihc ihe ihh ihi ihk iho ihr ihv iic iie iih iii iio iir ikc ike iki ikk iko ikr ikv io- ioc ioe ioh ioi ioo ior iov ir- irc ire iri irk iro irr irv ivc ive ivi ivo ivr ivv kcc kce kch kci kck kcr ke- kec kee keh kei kek keo ker kev khe khh khi khk kho khr khv kic kie kih kii kik kio kir kiv kkc kke kkh kki kkk kkr kkv koc koe koh koi kok koo kor krc kri krk kro krr krv kvh kvi kvk kvo kvr kvv o-i oc- occ och oci ock oco ocr ocv oec oee oeh oei oeo oer ohc ohe ohh ohi oho ohr oic oie oii oik oio oir oiv okc oke oki okk oko okr oo- ooc ooh ooi ook ooo oor oov or- orc ore orh ori ork oro orr orv ov- ovc ove ovh ovi ovo ovv rcc rce rch rci rco rcr rcv re- rec ree reh rei rek reo rer rev rh- rhc rhe rhh rhi rho rhr rhv ric rie rih rii rik rio rir riv rkc rke rkk rko rkv roc roe roh roi rok roo ror rov rrc rrh rri rrk rrr rvc rve rvh rvi rvo rvr rvv v-e vcc vce vch vci vco vcr vec vee veh vei vek veo ver vh- vhc vhe vhi vho vi- vic vie vii vik vio vir viv voc voe voh voi vok voo vor vov vrc vre vrh vri vrk vrr vvc vvi vvo vvr vvv