b-p bbb bbd bbe bbi bbo bbp bbs bdb bdd bde bdi bdo bdp bds be- beb bed bee bei beo bep bes bi- bib bid bie bii bio bip bis bob bod boe boi boo bop bos bpb bpd bpe bpi bpo bpp bps bsb bsd bse bsi bso bsp bss dbb dbd dbe dbi dbo dbp dbs ddb ddd dde ddi ddo ddp dds de- deb ded dee dei deo dep des di- dib did die dii dio dip dis dob dod doe doi doo dop dos dpb dpd dpe dpi dpo dpp dps dsb dsd dse dsi dso dsp dss ebb ebd ebe ebi ebo ebp ebs ed- edb edd ede edi edo edp eds eeb eed eee eeo eep ees eib eid eie eii eio eip eis eo- eob eod eoe eoi eoo eop eos ep- epb epd epe epi epo epp eps es- esb esd ese esi eso esp ess i-d ibb ibd ibe ibi ibo ibp ibs idb idd ide idi ido idp ids ie- ied iee iei iep ies iib iid iie iii iio iip iis io- iob iod ioe ioi ioo iop ios ipb ipd ipe ipi ipo ipp ips is- isb isd ise isi iso isp iss o-i ob- obb obd obe obi obo obp obs odb odd ode odi odo odp ods oeb oed oee oei oeo oep oes oib oid oie oii oio oip ois oo- oob ood ooi ooo oop oos op- opb opd ope opi opo opp ops os- osb osd ose osi oso osp oss p-p pbb pbd pbe pbi pbo pbp pbs pdb pdd pde pdi pdo pdp pds peb ped pee pei peo pep pes pib pid pie pii pio pip pis pob pod poe poi poo pop pos ppb ppd ppe ppi ppo ppp pps ps- psb psd pse psi pso psp pss sbb sbd sbe sbi sbo sbp sbs sdb sdd sde sdi sdo sdp sds se- seb sed see sei seo sep ses sib sid sie sii sio sip sis sob sod soe soi soo sop sos spb spd spe spi spo spp sps ss- ssb ssd sse ssi sso ssp sss