-ic c-- ccc cci ccn cco ccs cct ccx ci- cic cii cin cio cis cit cix cn- cnc cni cnn cno cns cnt cnx co- coc coi con coo cos cot cox csc csi csn cso css cst csx ctc cti ctn cto cts ctt ctx cxc cxi cxo cxs cxt cxx icc ici icn ico ics ict iic iii iin iio iis iit iix in- inc ini inn ino ins int inx io- ioc ioi ion ioo ios iot is- isc isi isn iso iss ist itc iti itn ito its itt itx ixc ixi ixn n-i ncc nci ncn nco ncs nct ncx nic nii nin nio nis nit nix nnc nni nnn nno nns nnt no- noc noi non noo nos not nox nsc nsi nsn nso nss nst nsx ntc nti ntn nto nts ntt ntx nxc nxt o-i oc- occ oci ocn oco ocs oct ocx oic oii oin oio ois oit on- onc oni onn ono ons ont onx oo- ooc ooi oon ooo oos oot oox os- osc osi osn oso oss ost osx ot- otc oti otn oto ots ott ox- oxc oxi oxn oxo oxt oxx scc sci scn sco scs sct scx sic sii sin sio sis sit six snc sni snn sno sns snt soc soi son soo sos sot sox ss- ssc ssi ssn sso sss sst ssx stc sti stn sto sts stt stx sxc sxi sxn sxs sxt t-x tcc tci tcn tco tcs tct tcx tic tii tin tio tis tit tix tnc tni tnn tno tns tnt tnx to- toc toi ton too tos tot tox tsc tsi tsn tso tss tst tsx ttc tti ttn tto tts ttt ttx txi txn txs txt xci xcx xic xii xin xio xis xit xix xnc xno xns xoc xoi xon xoo xos xot xox xsc xsi xss xst xtc xti xts xtx xxi xxo xxx