-ic -up b-p b-u bbb bbc bbi bbp bbr bbt bbu bcb bcc bci bcp bcr bct bcu bi- bib bic bii bip bir bit biu bpb bpc bpi bpp bpr bpt bpu brb bri brp brr brt bru btb btc bti btp btr btt btu bub buc bui bup bur but buu c-- cbb cbc cbi cbp cbr cbt cbu ccb ccc cci ccp ccr cct ccu ci- cib cic cii cip cir cit ciu cpb cpc cpi cpp cpr cpt cpu crb crc cri crp crr crt cru ctb ctc cti ctp ctr ctt ctu cub cuc cui cup cur cut cuu ibb ibc ibi ibp ibr ibt ibu icb icc ici icp icr ict icu iib iic iii iip iir iit iiu ipb ipc ipi ipp ipr ipt ipu ir- irb irc iri irp irr irt iru itb itc iti itp itt itu iu- iub iuc iui iup iur iut p-p pbb pbc pbi pbp pbr pbt pbu pcb pcc pci pcp pcr pct pcu pib pic pii pip pir pit piu ppb ppc ppi ppp ppr ppt ppu prb prc pri prp prr prt pru pt- ptb ptc pti ptp ptr ptt ptu pub puc pui pup pur put puu rbb rbc rbi rbp rbr rbt rbu rcb rcc rci rcp rcr rct rcu rib ric rii rip rir rit rpb rpc rpi rpp rpr rpt rpu rrb rrc rri rrp rrr rrt rru rtb rtc rti rtp rtr rtt rtu rub ruc rui rup rur rut ruu tbb tbc tbi tbp tbr tbt tbu tcb tcc tci tcp tcr tct tcu tib tic tii tip tir tit tiu tpb tpc tpi tpp tpr tpt tpu trb trc tri trp trr trt tru ttb ttc tti ttp ttr ttt ttu tub tuc tui tup tur tut tuu ubb ubc ubi ubp ubr ubt ubu ucb ucc uci ucp ucr uct ucu uib uic uii uip uir uit uiu up- upb upc upi upp upr upt upu ur- urb urc uri urp urr urt uru utb utc uti utp utr utt utu uuc uur uut uuu