-ic b-u bbb bbc bbg bbi bbr bbs bbu bcb bcc bcg bci bcr bcs bcu bgb bgc bgg bgi bgr bgs bgu bi- bib bic big bii bir bis biu brb brg bri brr brs bru bsb bsc bsg bsi bsr bss bsu bub buc bug bui bur bus buu c-- cbb cbc cbg cbi cbr cbs cbu ccb ccc ccg cci ccr ccs ccu cgb cgc cgg cgi cgr cgs cgu ci- cib cic cig cii cir cis ciu crb crc crg cri crr crs cru csb csc csg csi csr css csu cub cuc cug cui cur cus cuu gbc gbg gbi gbr gbs gbu gcb gcc gcg gci gcr gcs gcu ggb ggc ggg ggi ggr ggs ggu gib gic gig gii gir gis giu grb grc grg gri grr grs gru gsb gsc gsg gsi gsr gss gsu gu- gub guc gug gui gur gus guu ibb ibc ibg ibi ibr ibs ibu icb icc icg ici icr ics icu igb igc igg igi igr igs igu iib iic iii iir iis iiu ir- irb irc irg iri irr irs iru is- isb isc isg isi isr iss isu iu- iub iuc iug iui iur ius rbb rbc rbg rbi rbr rbs rbu rcb rcc rcg rci rcr rcs rcu rgb rgc rgg rgi rgr rgs rib ric rig rii rir ris rrb rrc rrg rri rrr rrs rru rsb rsc rsg rsi rsr rss rsu rub ruc rug rui rur rus ruu sbb sbc sbg sbi sbr sbs sbu scb scc scg sci scr scs scu sgb sgc sgg sgi sgr sgs sgu sib sic sig sii sir sis siu sr- srb src srg sri srr srs ss- ssb ssc ssg ssi ssr sss ssu sub suc sug sui sur sus suu ubb ubc ubg ubi ubr ubs ubu ucb ucc ucg uci ucr ucs ucu ugb ugc ugg ugi ugr ugs ugu uib uic uig uii uir uis uiu ur- urb urc urg uri urr urs uru usb usc usg usi usr uss usu uuc uug uur uus uuu