-ic b-p bbb bbc bbe bbf bbi bbo bbp bbs bbt bbx bcb bcc bce bcf bci bco bcp bcs bct bcx be- beb bec bee bef bei beo bep bes bet bex bfb bfc bfe bff bfi bfo bfp bfs bft bfx bi- bib bic bie bif bii bio bip bis bit bix bob boc boe bof boi boo bop bos bot box bpb bpc bpe bpf bpi bpo bpp bps bpt bpx bsb bsc bse bsf bsi bso bsp bss bst bsx btb btc bte btf bti bto btp bts btt btx bxb bxi bxo bxx c-- cbb cbc cbe cbf cbi cbo cbp cbs cbt cbx ccb ccc cce ccf cci cco ccp ccs cct ccx ce- ceb cec cee cef cei ceo cep ces cet cex cfb cfc cfe cff cfi cfo cfp cfs cft cfx ci- cib cic cie cif cii cio cip cis cit cix co- cob coc coe cof coi coo cop cos cot cox cpb cpc cpe cpf cpi cpo cpp cps cpt cpx csb csc cse csf csi cso csp css cst csx ctb ctc cte ctf cti cto ctp cts ctt ctx cxc cxf cxi cxo cxp cxs cxt cxx ebb ebc ebe ebf ebi ebo ebp ebs ebt ebx ec- ecb ecc ece ecf eci eco ecs ect ecx eeb eec eee eef eeo eep ees eet eex ef- efb efc efe eff efi efo efp efs eft efx eib eic eie eif eii eio eip eis eit eix eo- eob eoc eoe eof eoi eoo eop eos eot ep- epb epc epe epf epi epo epp eps ept epx es- esb esc ese esf esi eso esp ess est esx etb etc ete etf eti eto etp ets ett etx ex- exc exe exi exo exp exs ext exx fbb fbc fbe fbf fbi fbo fbp fbs fbt fbx fcb fcc fce fcf fci fco fcp fcs fct fcx feb fec fee fef fei feo fep fes fet fex ffc ffe fff ffi ffo ffp ffs fft ffx fib fic fie fif fii fip fis fit fix fob foc foe fof foi foo fop fos fot fox fpb fpc fpe fpi fpo fpp fps fpt fpx fsb fsc fse fsf fsi fso fsp fss fst fsx ftb ftc fte ftf fti fto ftp fts ftt ftx fxe fxi fxp fxs fxt fxx i-f ibb ibc ibe ibf ibi ibo ibp ibs ibt ibx icb icc ice icf ici ico icp ics ict ie- iec iee ief iei iep ies iet iex ifb ifc ife iff ifi ifo ifp ifs ift ifx iib iic iie iif iii iio iip iis iit iix io- iob ioc ioe iof ioi ioo iop ios iot ipb ipc ipe ipf ipi ipo ipp ips ipt ipx is- isb isc ise isf isi iso isp iss ist itb itc ite itf iti ito itp its itt itx ixc ixe ixi o-i ob- obb obc obe obf obi obo obp obs obt obx oc- ocb occ ocf oci oco ocp ocs oct ocx oeb oec oee oef oei oeo oep oes oet oex of- ofb ofc ofe off ofi ofo ofp ofs oft ofx oib oic oie oif oii oio oip ois oit oo- oob ooc oof ooi ooo oop oos oot oox op- opb opc ope opf opi opo opp ops opt opx os- osb osc ose osf osi oso osp oss ost osx ot- otb otc ote otf oti oto otp ots ott ox- oxb oxc oxf oxi oxo oxt oxx p-p pbb pbc pbe pbf pbi pbo pbp pbs pbt pbx pcb pcc pce pcf pci pco pcp pcs pct pcx peb pec pee pef pei peo pep pes pet pex pfb pfc pfe pff pfi pfo pfp pfs pft pfx pib pic pie pif pii pio pip pis pit pix pob poc poe pof poi poo pop pos pot pox ppb ppc ppe ppf ppi ppo ppp pps ppt ppx ps- psb psc pse psf psi pso psp pss pst psx pt- ptb ptc pte ptf pti pto ptp pts ptt ptx pxc pxe pxs pxt sbb sbc sbe sbf sbi sbo sbp sbs sbt sbx scb scc sce scf sci sco scp scs sct scx se- seb sec see sef sei seo sep ses set sex sfb sfc sfe sff sfi sfo sfp sfs sft sfx sib sic sie sif sii sio sip sis sit six sob soc soe sof soi soo sop sos sot sox spb spc spe spf spi spo spp sps spt spx ss- ssb ssc sse ssf ssi sso ssp sss sst ssx stb stc ste stf sti sto stp sts stt stx sxc sxi sxs sxt t-x tbb tbc tbe tbf tbi tbo tbp tbs tbt tcb tcc tce tcf tci tco tcp tcs tct tcx te- teb tec tee tef tei teo tep tes tet tex tfb tfc tfe tff tfi tfo tfp tfs tft tfx tib tic tie tif tii tio tip tis tit tix to- tob toc toe tof toi too top tos tot tox tpb tpc tpe tpf tpi tpo tpp tps tpt tpx tsb tsc tse tsf tsi tso tsp tss tst tsx ttb ttc tte ttf tti tto ttp tts ttt ttx txe txf txi txs txt xbc xbe xbx xcb xcf xci xcp xcx xee xep xes xet xex xfe xfs xft xfx xic xie xii xio xis xit xix xoc xof xoi xoo xop xos xot xox xpb xpc xpe xpf xpo xpp xps xpt xsb xsc xsi xsp xss xst xtc xtf xti xtp xts xtx xxi xxo xxp xxx