-er -up c-- ccc cce ccl ccp ccr ccu ce- cec cee cel cep cer ceu cl- clc cle cll clp clr clu cpc cpe cpl cpp cpr cpu crc cre crl crp crr cru cuc cue cul cup cur cuu ec- ecc ece ecl ecr ecu eec eee eel eep eer elc ele ell elp elr elu ep- epc epe epl epp epr epu erc ere erl erp err eru eu- euc eue eul eup eur l-p lcc lce lcl lcp lcr lcu lec lee lel lep ler leu llc lle lll llp llr llu lpc lpe lpl lpp lpr lpu lrc lrp lrr lru luc lue lul lup lur luu p-p pcc pce pcl pcp pcr pcu pec pee pel pep per peu plc ple pll plp plr plu ppc ppe ppl ppp ppr ppu prc pre prl prp prr pru puc pue pul pup pur puu rcc rce rcl rcp rcr rcu re- rec ree rel rep rer reu rlc rle rll rlp rlr rlu rpc rpe rpl rpp rpr rpu rrc rrl rrp rrr rru ruc rue rup rur ruu ucc uce ucl ucp ucr ucu uec uee uel uep uer ulc ule ull ulp ulr ulu up- upc upe upp upr upu ur- urc ure url urp urr uru uuc uue uur uuu