-er -ic b-p bbb bbc bbd bbe bbh bbi bbo bbp bbr bbs bcb bcc bcd bce bch bci bco bcp bcr bcs bdb bdc bdd bde bdh bdi bdo bdp bdr bds be- beb bec bed bee beh bei beo bep ber bes bhb bhc bhd bhe bhh bhi bho bhp bhr bhs bi- bib bic bid bie bih bii bio bip bir bis bob boc bod boe boh boi boo bop bor bos bpb bpc bpd bpe bph bpi bpo bpp bpr bps brb brd bre brh bri bro brp brr brs bsb bsc bsd bse bsh bsi bso bsp bsr bss c-- cbb cbc cbd cbe cbh cbi cbo cbp cbr cbs ccb ccc ccd cce cch cci cco ccp ccr ccs cdb cdc cdd cde cdh cdi cdo cdp cdr cds ce- ceb cec ced cee ceh cei ceo cep cer ces ch- chb chc chd che chh chi cho chp chr chs ci- cib cic cid cie cih cii cio cip cir cis co- cob coc cod coe coh coi coo cop cor cos cpb cpc cpd cpe cph cpi cpo cpp cpr cps crb crc crd cre crh cri cro crp crr crs csb csc csd cse csh csi cso csp csr css dbb dbc dbd dbe dbh dbi dbo dbp dbr dbs dcb dcc dcd dce dci dco dcp dcr dcs ddb ddc ddd dde ddh ddi ddo ddp ddr dds de- deb dec ded dee deh dei deo dep der des dh- dhb dhc dhd dhe dhh dhi dho dhp dhr dhs di- dib dic did die dih dii dio dip dir dis dob doc dod doe doh doi doo dop dor dos dpb dpc dpd dpe dph dpi dpo dpp dpr dps drb drc drd dre dri dro drp drr drs dsb dsc dsd dse dsh dsi dso dsp dsr dss ebb ebc ebd ebe ebh ebi ebo ebp ebr ebs ec- ecb ecc ecd ece ech eci eco ecr ecs ed- edb edc edd ede edh edi edo edp edr eds eeb eec eed eee eeo eep eer ees ehb ehc ehd ehe ehh ehi eho ehp ehr ehs eib eic eid eie eii eio eip eir eis eo- eob eoc eod eoe eoh eoi eoo eop eor eos ep- epb epc epd epe eph epi epo epp epr eps erb erc erd ere erh eri ero erp err ers es- esb esc esd ese esh esi eso esp esr ess h-i hbb hbc hbd hbe hbh hbi hbo hbp hbr hbs hcb hcc hcd hce hch hci hco hcp hcr hcs hdb hdc hdd hde hdh hdi hdo hdp hdr hds he- heb hec hed hee heh hei heo hep her hes hhb hhc hhd hhe hhh hhi hho hhp hhr hhs hib hic hid hie hih hii hio hip hir his hob hoc hod hoe hoh hoi hoo hop hor hos hpb hpc hpd hpe hph hpi hpo hpp hpr hps hr- hrb hrc hrd hre hrh hri hro hrp hrr hrs hsb hsc hsd hse hsh hsi hsp hsr hss i-d ibb ibc ibd ibe ibh ibi ibo ibp ibr ibs icb icc icd ice ich ici ico icp icr ics idb idc idd ide idh idi ido idp idr ids ie- iec ied iee iei iep ier ies ihb ihc ihd ihe ihh ihi iho ihp ihr ihs iib iic iid iie iih iii iio iip iir iis io- iob ioc iod ioe ioh ioi ioo iop ior ios ipb ipc ipd ipe ipi ipo ipp ipr ips ir- irb irc ird ire iri iro irp irr irs is- isb isc isd ise ish isi iso isp isr iss o-i ob- obb obc obd obe obh obi obo obp obr obs oc- ocb occ ocd och oci oco ocp ocr ocs odb odc odd ode odh odi odo odp odr ods oeb oec oed oee oeh oei oeo oep oer oes ohc ohd ohe ohh ohi oho ohp ohr ohs oib oic oid oie oii oio oip oir ois oo- oob ooc ood ooh ooi ooo oop oor oos op- opb opc opd ope oph opi opo opp opr ops or- orb orc ord ore orh ori oro orp orr ors os- osb osc osd ose osh osi oso osp osr oss p-p pbb pbc pbd pbe pbi pbo pbp pbr pbs pcb pcc pcd pce pch pci pco pcp pcr pcs pdb pdc pdd pde pdh pdi pdo pdp pdr pds peb pec ped pee peh pei peo pep per pes phb phc phd phe phi pho php phr phs pib pic pid pie pih pii pio pip pir pis pob poc pod poe poh poi poo pop por pos ppb ppc ppd ppe pph ppi ppo ppp ppr pps prb prc prd pre prh pri pro prp prr prs ps- psb psc psd pse psh psi pso psp psr pss rbb rbc rbd rbe rbh rbi rbo rbp rbr rbs rcb rcc rcd rce rch rci rco rcp rcr rcs rdb rdc rdd rde rdh rdi rdo rdp rdr rds re- reb rec red ree reh rei reo rep rer res rh- rhb rhc rhd rhe rhh rhi rho rhp rhr rhs rib ric rid rie rih rii rio rip rir ris rob roc rod roe roh roi roo rop ror ros rpb rpc rpd rpe rph rpi rpo rpp rpr rps rrb rrc rrd rrh rri rrp rrr rrs rsb rsc rsd rse rsh rsi rso rsp rsr rss sbb sbc sbd sbe sbh sbi sbo sbp sbr sbs scb scc scd sce sch sci sco scp scr scs sdb sdc sdd sde sdh sdi sdo sdp sdr sds se- seb sec sed see seh sei seo sep ser ses sh- shb shc shd she shh shi sho shp shr shs sib sic sid sie sih sii sio sip sir sis sob soc sod soe soh soi soo sop sor sos spb spc spd spe sph spi spo spp spr sps sr- srb