-er -ic c-- ccc ccd cce cci cco ccr ccs ccu ccv cdc cdd cde cdi cdo cdr cds cdu cdv ce- cec ced cee cei ceo cer ces ceu cev ci- cic cid cie cii cio cir cis ciu civ co- coc cod coe coi coo cor cos cou cov crc crd cre cri cro crr crs cru crv csc csd cse csi cso csr css csu csv cuc cud cue cui cuo cur cus cuu cuv cvc cvd cve cvi cvo cvr cvs cvu cvv dcc dcd dce dci dco dcr dcs dcu dcv ddc ddd dde ddi ddo ddr dds ddu de- dec ded dee dei deo der des deu dev di- dic did die dii dio dir dis diu div doc dod doe doi doo dor dos dou dov drc drd dre dri dro drr drs dru drv dsc dsd dse dsi dso dsr dss dsu dsv duc dud due dui duo dur dus duv dvc dvd dve dvi dvr dvs dvu ec- ecc ecd ece eci eco ecr ecs ecu ecv ed- edc edd ede edi edo edr eds edu eec eed eee eeo eer ees eev eic eid eie eii eio eir eis eiu eiv eo- eoc eod eoe eoi eoo eor eos eou erc erd ere eri ero err ers eru erv es- esc esd ese esi eso esr ess esu esv eu- euc eud eue eui eur eus euv evc evd eve evi evo evr evs evv i-d i-v icc icd ice ici ico icr ics icu icv idc idd ide idi ido idr ids idu idv ie- iec ied iee iei ier ies iev iic iid iie iii iio iir iis iiu io- ioc iod ioe ioi ioo ior ios iou iov ir- irc ird ire iri iro irr irs iru irv is- isc isd ise isi iso isr iss isu isv iu- iuc iud iue iui iur ius ivc ivd ive ivi ivo ivr ivs ivu ivv o-i oc- occ ocd oci oco ocr ocs ocu ocv odc odd ode odi odo odr ods odu odv oec oed oee oei oeo oer oes oic oid oie oii oio oir ois oiu oiv oo- ooc ood ooi ooo oor oos oov or- orc ord ore ori oro orr ors oru orv os- osc osd ose osi oso osr oss osu osv ou- ouc oud oue oui ouo our ous ov- ovc ovd ove ovi ovo ovs ovv rcc rcd rce rci rco rcr rcs rcu rcv rdc rdd rde rdi rdo rdr rds rdu rdv re- rec red ree rei reo rer res reu rev ric rid rie rii rio rir ris riv roc rod roe roi roo ror ros rou rov rrc rrd rri rrr rrs rru rsc rsd rse rsi rso rsr rss rsu rsv ruc rud rue rui ruo rur rus ruu ruv rvc rvd rve rvi rvo rvr rvs rvu rvv scc scd sce sci sco scr scs scu scv sdc sdd sde sdi sdo sdr sds sdu sdv se- sec sed see sei seo ser ses seu sev sic sid sie sii sio sir sis siu siv soc sod soe soi soo sor sos sou sov sr- src srd sre sri sro srr srs srv ss- ssc ssd sse ssi sso ssr sss ssu ssv suc sud sue sui suo sur sus suu suv svc svd sve svi svo svr svs svu svv ucc ucd uce uci uco ucr ucs ucu ucv udc udd ude udi udo udr uds udu udv uec ued uee uei uer ues uic uid uie uii uio uir uis uiu uoc uod uoe uoo uor uos ur- urc urd ure uri uro urr urs uru usc usd use usi uso usr uss usu usv uuc uue uur uus uuu uvc uve uvo uvs uvu uvv v-e vcc vcd vce vci vco vcr vcs vcu vdc vdd vde vdi vdo vdr vds vdu vdv vec ved vee vei veo ver ves veu vi- vic vid vie vii vio vir vis viu viv voc vod voe voi voo vor vos vou vov vrc vrd vre vri vrr vrs vru vsc vsd vse vsi vso vsr vss vsu vsv vue vur vus vuv vvc vvi vvo vvr vvs vvv