-er -ic c-- ccc ccd cce cci cco ccr ccs ccu cdc cdd cde cdi cdo cdr cds cdu ce- cec ced cee cei ceo cer ces ceu ci- cic cid cie cii cio cir cis ciu co- coc cod coe coi coo cor cos cou crc crd cre cri cro crr crs cru csc csd cse csi cso csr css csu cuc cud cue cui cuo cur cus cuu dcc dcd dce dci dco dcr dcs dcu ddc ddd dde ddi ddo ddr dds ddu de- dec ded dee dei deo der des deu di- dic did die dii dio dir dis diu doc dod doe doi doo dor dos dou drc drd dre dri dro drr drs dru dsc dsd dse dsi dso dsr dss dsu duc dud due dui duo dur dus ec- ecc ecd ece eci eco ecr ecs ecu ed- edc edd ede edi edo edr eds edu eec eed eee eeo eer ees eic eid eie eii eio eir eis eiu eo- eoc eod eoe eoi eoo eor eos eou erc erd ere eri ero err ers eru es- esc esd ese esi eso esr ess esu eu- euc eud eue eui eur eus i-d icc icd ice ici ico icr ics icu idc idd ide idi ido idr ids idu ie- iec ied iee iei ier ies iic iid iie iii iio iir iis iiu io- ioc iod ioe ioi ioo ior ios iou ir- irc ird ire iri iro irr irs iru is- isc isd ise isi iso isr iss isu iu- iuc iud iue iui iur ius o-i oc- occ ocd oci oco ocr ocs ocu odc odd ode odi odo odr ods odu oec oed oee oei oeo oer oes oic oid oie oii oio oir ois oiu oo- ooc ood ooi ooo oor oos or- orc ord ore ori oro orr ors oru os- osc osd ose osi oso osr oss osu ou- ouc oud oue oui ouo our ous rcc rcd rce rci rco rcr rcs rcu rdc rdd rde rdi rdo rdr rds rdu re- rec red ree rei reo rer res reu ric rid rie rii rio rir ris roc rod roe roi roo ror ros rou rrc rrd rri rrr rrs rru rsc rsd rse rsi rso rsr rss rsu ruc rud rue rui ruo rur rus ruu scc scd sce sci sco scr scs scu sdc sdd sde sdi sdo sdr sds sdu se- sec sed see sei seo ser ses seu sic sid sie sii sio sir sis siu soc sod soe soi soo sor sos sou sr- src srd sre sri sro srr srs ss- ssc ssd sse ssi sso ssr sss ssu suc sud sue sui suo sur sus suu ucc ucd uce uci uco ucr ucs ucu udc udd ude udi udo udr uds udu 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 uuc uue uur uus uuu