c-- ccc ccl ccr ccs ccu cl- clc cll clr cls clu crc crl crr crs cru csc csl csr css csu cuc cul cur cus cuu lcc lcl lcr lcs lcu llc lll llr lls llu lrc lrr lrs lru lsc lsl lsr lss lsu luc lul lur lus luu rcc rcl rcr rcs rcu rlc rll rlr rls rlu rrc rrl rrr rrs rru rsc rsl rsr rss rsu ruc rur rus ruu scc scl scr scs scu slc sll slr sls slu sr- src srl srr srs ss- ssc ssl ssr sss ssu suc sul sur sus suu ucc ucl ucr ucs ucu ulc ull ulr uls ulu ur- urc url urr urs uru usc usl usr uss usu uuc uur uus uuu