-er -ic -up c-- ccc ccd cce cci ccp ccr ccs ccu cdc cdd cde cdi cdp cdr cds cdu ce- cec ced cee cei cep cer ces ceu ci- cic cid cie cii cip cir cis ciu cpc cpd cpe cpi cpp cpr cps cpu crc crd cre cri crp crr crs cru csc csd cse csi csp csr css csu cuc cud cue cui cup cur cus cuu dcc dcd dce dci dcp dcr dcs dcu ddc ddd dde ddi ddp ddr dds ddu de- dec ded dee dei dep der des deu di- dic did die dii dip dir dis diu dpc dpd dpe dpi dpp dpr dps dpu drc drd dre dri drp drr drs dru dsc dsd dse dsi dsp dsr dss dsu duc dud due dui dup dur dus ec- ecc ecd ece eci ecr ecs ecu ed- edc edd ede edi edp edr eds edu eec eed eee eep eer ees eic eid eie eii eip eir eis eiu ep- epc epd epe epi epp epr eps epu erc erd ere eri erp err ers eru es- esc esd ese esi esp esr ess esu eu- euc eud eue eui eup eur eus i-d icc icd ice ici icp icr ics icu idc idd ide idi idp idr ids idu ie- iec ied iee iei iep ier ies iic iid iie iii iip iir iis iiu ipc ipd ipe ipi ipp ipr ips ipu ir- irc ird ire iri irp irr irs iru is- isc isd ise isi isp isr iss isu iu- iuc iud iue iui iup iur ius p-p pcc pcd pce pci pcp pcr pcs pcu pdc pdd pde pdi pdp pdr pds pdu pec ped pee pei pep per pes peu pic pid pie pii pip pir pis piu ppc ppd ppe ppi ppp ppr pps ppu prc prd pre pri prp prr prs pru ps- psc psd pse psi psp psr pss psu puc pud pue pui pup pur pus puu rcc rcd rce rci rcp rcr rcs rcu rdc rdd rde rdi rdp rdr rds rdu re- rec red ree rei rep rer res reu ric rid rie rii rip rir ris rpc rpd rpe rpi rpp rpr rps rpu rrc rrd rri rrp rrr rrs rru rsc rsd rse rsi rsp rsr rss rsu ruc rud rue rui rup rur rus ruu scc scd sce sci scp scr scs scu sdc sdd sde sdi sdp sdr sds sdu se- sec sed see sei sep ser ses seu sic sid sie sii sip sir sis siu spc spd spe spi spp spr sps spu sr- src srd sre sri srp srr srs ss- ssc ssd sse ssi ssp ssr sss ssu suc sud sue sui sup sur sus suu ucc ucd uce uci ucp ucr ucs ucu udc udd ude udi udp udr uds udu uec ued uee uei uep uer ues uic uid uie uii uip uir uis uiu up- upc upd upe upi upp upr ups upu ur- urc urd ure uri urp urr urs uru usc usd use usi usp usr uss usu uuc uue uur uus uuu