-ic -up b-p b-u bbb bbc bbi bbp bbu bcb bcc bci bcp bcu bi- bib bic bii bip biu bpb bpc bpi bpp bpu bub buc bui bup buu c-- cbb cbc cbi cbp cbu ccb ccc cci ccp ccu ci- cib cic cii cip ciu cpb cpc cpi cpp cpu cub cuc cui cup cuu ibb ibc ibi ibp ibu icb icc ici icp icu iib iic iii iip iiu ipb ipc ipi ipp ipu iu- iub iuc iui iup p-p pbb pbc pbi pbp pbu pcb pcc pci pcp pcu pib pic pii pip piu ppb ppc ppi ppp ppu pub puc pui pup puu ubb ubc ubi ubp ubu ucb ucc uci ucp ucu uib uic uii uip uiu up- upb upc upi upp upu uuc uuu