-ic b-p bbb bbc bbd bbi bbp bbr bbs bcb bcc bcd bci bcp bcr bcs bdb bdc bdd bdi bdp bdr bds bi- bib bic bid bii bip bir bis bpb bpc bpd bpi bpp bpr bps brb brd bri brp brr brs bsb bsc bsd bsi bsp bsr bss c-- cbb cbc cbd cbi cbp cbr cbs ccb ccc ccd cci ccp ccr ccs cdb cdc cdd cdi cdp cdr cds ci- cib cic cid cii cip cir cis cpb cpc cpd cpi cpp cpr cps crb crc crd cri crp crr crs csb csc csd csi csp csr css dbb dbc dbd dbi dbp dbr dbs dcb dcc dcd dci dcp dcr dcs ddb ddc ddd ddi ddp ddr dds di- dib dic did dii dip dir dis dpb dpc dpd dpi dpp dpr dps drb drc drd dri drp drr drs dsb dsc dsd dsi dsp dsr dss i-d ibb ibc ibd ibi ibp ibr ibs icb icc icd ici icp icr ics idb idc idd idi idp idr ids iib iic iid iii iip iir iis ipb ipc ipd ipi ipp ipr ips ir- irb irc ird iri irp irr irs is- isb isc isd isi isp isr iss p-p pbb pbc pbd pbi pbp pbr pbs pcb pcc pcd pci pcp pcr pcs pdb pdc pdd pdi pdp pdr pds pib pic pid pii pip pir pis ppb ppc ppd ppi ppp ppr pps prb prc prd pri prp prr prs ps- psb psc psd psi psp psr pss rbb rbc rbd rbi rbp rbr rbs rcb rcc rcd rci rcp rcr rcs rdb rdc rdd rdi rdp rdr rds rib ric rid rii rip rir ris rpb rpc rpd rpi rpp rpr rps rrb rrc rrd rri rrp rrr rrs rsb rsc rsd rsi rsp rsr rss sbb sbc sbd sbi sbp sbr sbs scb scc scd sci scp scr scs sdb sdc sdd sdi sdp sdr sds sib sic sid sii sip sir sis spb spc spd spi spp spr sps sr- srb src srd sri srp srr srs ss- ssb ssc ssd ssi ssp ssr sss