-th c-- ccc cch ccn ccp cct ccx ch- chc chh chn chp cht chx cn- cnc cnh cnn cnp cnt cnx cpc cph cpn cpp cpt cpx ctc cth ctn ctp ctt ctx cxc cxh cxp cxt cxx hcc hch hcn hcp hct hhc hhh hhn hhp hht hnc hnh hnn hnt hpc hph hpn hpp hpt htc hth htn htp htt htx hxc ncc nch ncn ncp nct ncx nhc nhh nhn nhp nht nnc nnh nnn nnp nnt npc nph npn npp npt ntc nth ntn ntp ntt ntx nxc nxt p-p pcc pch pcn pcp pct pcx phc phn php pht phx pn- pnc pnh pnn pnp pnt pnx ppc pph ppn ppp ppt ppx pt- ptc pth ptn ptp ptt ptx pxc pxt t-x tcc tch tcn tcp tct tcx th- thc thh thn thp tht thx tnc tnh tnn tnp tnt tnx tpc tph tpn tpp tpt tpx ttc tth ttn ttp ttt ttx txn txt xch xcp xcx xhp xht xnc xpc xpn xpp xpt xtc xtp xtx xxp xxx