-ic b-p bbb bbc bbd bbi bbo bbp bbr bbs bbt bcb bcc bcd bci bco bcp bcr bcs bct bdb bdc bdd bdi bdo bdp bdr bds bdt bi- bib bic bid bii bio bip bir bis bit bob boc bod boi boo bop bor bos bot bpb bpc bpd bpi bpo bpp bpr bps bpt brb brd bri bro brp brr brs brt bsb bsc bsd bsi bso bsp bsr bss bst btb btc btd bti bto btp btr bts btt c-- cbb cbc cbd cbi cbo cbp cbr cbs cbt ccb ccc ccd cci cco ccp ccr ccs cct cdb cdc cdd cdi cdo cdp cdr cds cdt ci- cib cic cid cii cio cip cir cis cit co- cob coc cod coi coo cop cor cos cot cpb cpc cpd cpi cpo cpp cpr cps cpt crb crc crd cri cro crp crr crs crt csb csc csd csi cso csp csr css cst ctb ctc ctd cti cto ctp ctr cts ctt dbb dbc dbd dbi dbo dbp dbr dbs dbt dcb dcc dcd dci dco dcp dcr dcs dct ddb ddc ddd ddi ddo ddp ddr dds ddt di- dib dic did dii dio dip dir dis dit dob doc dod doi doo dop dor dos dot dpb dpc dpd dpi dpo dpp dpr dps dpt drb drc drd dri dro drp drr drs drt dsb dsc dsd dsi dso dsp dsr dss dst dtb dtc dtd dti dto dtp dtr dts dtt i-d ibb ibc ibd ibi ibo ibp ibr ibs ibt icb icc icd ici ico icp icr ics ict idb idc idd idi ido idp idr ids idt iib iic iid iii iio iip iir iis iit io- iob ioc iod ioi ioo iop ior ios iot ipb ipc ipd ipi ipo ipp ipr ips ipt ir- irb irc ird iri iro irp irr irs irt is- isb isc isd isi iso isp isr iss ist itb itc itd iti ito itp its itt o-i ob- obb obc obd obi obo obp obr obs obt oc- ocb occ ocd oci oco ocp ocr ocs oct odb odc odd odi odo odp odr ods odt oib oic oid oii oio oip oir ois oit oo- oob ooc ood ooi ooo oop oor oos oot op- opb opc opd opi opo opp opr ops opt or- orb orc ord ori oro orp orr ors ort os- osb osc osd osi oso osp osr oss ost ot- otb otc otd oti oto otp otr ots ott p-p pbb pbc pbd pbi pbo pbp pbr pbs pbt pcb pcc pcd pci pco pcp pcr pcs pct pdb pdc pdd pdi pdo pdp pdr pds pdt pib pic pid pii pio pip pir pis pit pob poc pod poi poo pop por pos pot ppb ppc ppd ppi ppo ppp ppr pps ppt prb prc prd pri pro prp prr prs prt ps- psb psc psd psi pso psp psr pss pst pt- ptb ptc ptd pti pto ptp ptr pts ptt rbb rbc rbd rbi rbo rbp rbr rbs rbt rcb rcc rcd rci rco rcp rcr rcs rct rdb rdc rdd rdi rdo rdp rdr rds rdt rib ric rid rii rio rip rir ris rit rob roc rod roi roo rop ror ros rot rpb rpc rpd rpi rpo rpp rpr rps rpt rrb rrc rrd rri rrp rrr rrs rrt rsb rsc rsd rsi rso rsp rsr rss rst rtb rtc rtd rti rto rtp rtr rts rtt sbb sbc sbd sbi sbo sbp sbr sbs sbt scb scc scd sci sco scp scr scs sct sdb sdc sdd sdi sdo sdp sdr sds sdt sib sic sid sii sio sip sir sis sit sob soc sod soi soo sop sor sos sot spb spc spd spi spo spp spr sps spt sr- srb src srd sri sro srp srr srs srt ss- ssb ssc ssd ssi sso ssp ssr sss sst stb stc std sti sto stp str sts stt tbb tbc tbd tbi tbo tbp tbr tbs tbt tcb tcc tcd tci tco tcp tcr tcs tct tdb tdc tdd tdi tdo tdp tdr tds tdt tib tic tid tii tio tip tir tis tit to- tob toc tod toi too top tor tos tot tpb tpc tpd tpi tpo tpp tpr tps tpt trb trc trd tri tro trp trr trs trt tsb tsc tsd tsi tso tsp tsr tss tst ttb ttc ttd tti tto ttp ttr tts ttt