-ic c-- ccc cce cci ccp cct ccx ce- cec cee cei cep cet cex ci- cic cie cii cip cit cix cpc cpe cpi cpp cpt cpx ctc cte cti ctp ctt ctx cxc cxi cxp cxt cxx ec- ecc ece eci ect ecx eec eee eep eet eex eic eie eii eip eit eix ep- epc epe epi epp ept epx etc ete eti etp ett etx ex- exc exe exi exp ext exx icc ice ici icp ict ie- iec iee iei iep iet iex iic iie iii iip iit iix ipc ipe ipi ipp ipt ipx itc ite iti itp itt itx ixc ixe ixi p-p pcc pce pci pcp pct pcx pec pee pei pep pet pex pic pie pii pip pit pix ppc ppe ppi ppp ppt ppx pt- ptc pte pti ptp ptt ptx pxc pxe pxt t-x tcc tce tci tcp tct tcx te- tec tee tei tep tet tex tic tie tii tip tit tix tpc tpe tpi tpp tpt tpx ttc tte tti ttp ttt ttx txe txi txt xci xcp xcx xee xep xet xex xic xie xii xit xix xpc xpe xpp xpt xtc xti xtp xtx xxi xxp xxx