-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 cny co- coc coi con coo cos cot cox coy csc csi csn cso css cst csx csy ctc cti ctn cto cts ctt ctx cty cxc cxi cxo cxs cxt cxx cyc cyn cyo cys cyt icc ici icn ico ics ict icy iic iii iin iio iis iit iix in- inc ini inn ino ins int inx iny io- ioc ioi ion ioo ios iot is- isc isi isn iso iss ist isy itc iti itn ito its itt itx ity ixc ixi ixn ixy iyc iyo iys iyt iyy 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 noy nsc nsi nsn nso nss nst nsx nsy ntc nti ntn nto nts ntt ntx nxc nxt nyc nyn nyo nys nyt nyx nyy o-i oc- occ oci ocn oco ocs oct ocx oic oii oin oio ois oit on- onc oni onn ono ons ont onx ony 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 oxy oyi oyo oys scc sci scn sco scs sct scx sic sii sin sio sis sit six snc sni snn sno sns snt sny soc soi son soo sos sot sox soy ss- ssc ssi ssn sso sss sst ssx stc sti stn sto sts stt stx sty sxc sxi sxn sxs sxt sy- syc syi syn sys syt syx t-x tcc tci tcn tco tcs tct tcx tic tii tin tio tis tit tix tiy tnc tni tnn tno tns tnt tnx to- toc toi ton too tos tot tox toy tsc tsi tsn tso tss tst tsx tsy ttc tti ttn tto tts ttt ttx tty txi txn txs txt tyc tyn tyo tys tyt 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 xty xxi xxo xxx xxy xyy ycc yci yco ycs ycy yii yin yio yis yit ynn yns yny yoc yoi yon yoo yos yot yox yoy ysc ysi yso yss yst ysy ytc ytn yto yts ytt yxy yyc yys yyt yyy