-ic c-- ccc ccd cce cci cco ccp ccs ccx cdc cdd cde cdi cdo cdp cds cdx ce- cec ced cee cei ceo cep ces cex ci- cic cid cie cii cio cip cis cix co- coc cod coe coi coo cop cos cox cpc cpd cpe cpi cpo cpp cps cpx csc csd cse csi cso csp css csx cxc cxi cxo cxp cxs cxx dcc dcd dce dci dco dcp dcs dcx ddc ddd dde ddi ddo ddp dds ddx de- dec ded dee dei deo dep des dex di- dic did die dii dio dip dis dix doc dod doe doi doo dop dos dox dpc dpd dpe dpi dpo dpp dps dsc dsd dse dsi dso dsp dss dsx dxc dxd dxi dxo dxp dxs dxx ec- ecc ecd ece eci eco ecs ecx ed- edc edd ede edi edo edp eds edx eec eed eee eeo eep ees eex eic eid eie eii eio eip eis eix eo- eoc eod eoe eoi eoo eop eos ep- epc epd epe epi epo epp eps epx es- esc esd ese esi eso esp ess esx ex- exc exd exe exi exo exp exs exx i-d icc icd ice ici ico icp ics idc idd ide idi ido idp ids idx ie- iec ied iee iei iep ies iex iic iid iie iii iio iip iis iix io- ioc iod ioe ioi ioo iop ios ipc ipd ipe ipi ipo ipp ips ipx is- isc isd ise isi iso isp iss ixc ixe ixi o-i oc- occ ocd oci oco ocp ocs ocx odc odd ode odi odo odp ods oec oed oee oei oeo oep oes oex oic oid oie oii oio oip ois oo- ooc ood ooi ooo oop oos oox op- opc opd ope opi opo opp ops opx os- osc osd ose osi oso osp oss osx ox- oxc oxi oxo oxx p-p pcc pcd pce pci pco pcp pcs pcx pdc pdd pde pdi pdo pdp pds pdx pec ped pee pei peo pep pes pex pic pid pie pii pio pip pis pix poc pod poe poi poo pop pos pox ppc ppd ppe ppi ppo ppp pps ppx ps- psc psd pse psi pso psp pss psx pxc pxe pxs scc scd sce sci sco scp scs scx sdc sdd sde sdi sdo sdp sds se- sec sed see sei seo sep ses sex sic sid sie sii sio sip sis six soc sod soe soi soo sop sos sox spc spd spe spi spo spp sps spx ss- ssc ssd sse ssi sso ssp sss ssx sxc sxi sxs xcd xci xcp xcx xdc xde xdi xds xed xee xep xes xex xic xie xii xio xis xix xoc xod xoi xoo xop xos xox xpc xpd xpe xpo xpp xps xsc xsi xsp xss xxi xxo xxp xxx