-er -up c-- ccc ccd cce ccl ccp ccr ccs ccu cdc cdd cde cdl cdp cdr cds cdu ce- cec ced cee cel cep cer ces ceu cl- clc cld cle cll clp clr cls clu cpc cpd cpe cpl cpp cpr cps cpu crc crd cre crl crp crr crs cru csc csd cse csl csp csr css csu cuc cud cue cul cup cur cus cuu dcc dcd dce dcl dcp dcr dcs dcu ddc ddd dde ddl ddp ddr dds ddu de- dec ded dee del dep der des deu dl- dlc dld dle dll dlp dlr dls dlu dpc dpd dpe dpl dpp dpr dps dpu drc drd dre drl drp drr drs dru dsc dsd dse dsl dsp dsr dss dsu duc dud due dul dup dur dus ec- ecc ecd ece ecl ecr ecs ecu ed- edc edd ede edl edp edr eds edu eec eed eee eel eep eer ees elc eld ele ell elp elr els elu ep- epc epd epe epl epp epr eps epu erc erd ere erl erp err ers eru es- esc esd ese esl esp esr ess esu eu- euc eud eue eul eup eur eus l-p lcc lcd lce lcl lcp lcr lcs lcu ldc ldd lde ldl ldp ldr lds ldu lec led lee lel lep ler les leu llc lld lle lll llp llr lls llu lpc lpd lpe lpl lpp lpr lps lpu lrc lrd lrp lrr lrs lru lsc lsd lse lsl lsp lsr lss lsu luc lud lue lul lup lur lus luu p-p pcc pcd pce pcl pcp pcr pcs pcu pdc pdd pde pdl pdp pdr pds pdu pec ped pee pel pep per pes peu plc pld ple pll plp plr pls plu ppc ppd ppe ppl ppp ppr pps ppu prc prd pre prl prp prr prs pru ps- psc psd pse psl psp psr pss psu puc pud pue pul pup pur pus puu rcc rcd rce rcl rcp rcr rcs rcu rdc rdd rde rdl rdp rdr rds rdu re- rec red ree rel rep rer res reu rlc rld rle rll rlp rlr rls rlu rpc rpd rpe rpl rpp rpr rps rpu rrc rrd rrl rrp rrr rrs rru rsc rsd rse rsl rsp rsr rss rsu ruc rud rue rup rur rus ruu scc scd sce scl scp scr scs scu sdc sdd sde sdl sdp sdr sds sdu se- sec sed see sel sep ser ses seu slc sld sle sll slp slr sls slu spc spd spe spl spp spr sps spu sr- src srd sre srl srp srr srs ss- ssc ssd sse ssl ssp ssr sss ssu suc sud sue sul sup sur sus suu ucc ucd uce ucl ucp ucr ucs ucu udc udd ude udl udp udr uds udu uec ued uee uel uep uer ues ulc uld ule ull ulp ulr uls ulu up- upc upd upe upp upr ups upu ur- urc urd ure url urp urr urs uru usc usd use usl usp usr uss usu uuc uue uur uus uuu