-ic c-- ccc cci ccr ccs ccu ccx ci- cic cii cir cis ciu cix crc cri crr crs cru crx csc csi csr css csu csx cuc cui cur cus cuu cxc cxi cxr cxs cxx icc ici icr ics icu iic iii iir iis iiu iix ir- irc iri irr irs iru irx is- isc isi isr iss isu iu- iuc iui iur ius ixc ixi rcc rci rcr rcs rcu rcx ric rii rir ris rix rrc rri rrr rrs rru rsc rsi rsr rss rsu rsx ruc rui rur rus ruu rux rxr rxs scc sci scr scs scu scx sic sii sir sis siu six sr- src sri srr srs srx ss- ssc ssi ssr sss ssu ssx suc sui sur sus suu sux sxc sxi sxs sxu ucc uci ucr ucs ucu uic uii uir uis uiu ur- urc uri urr urs uru urx usc usi usr uss usu usx uuc uur uus uuu uxc uxr uxu xci xcr xcx xic xii xis xiu xix xrc xrx xsc xsi xss xui xus xxi xxx