ont oo- ooc oog ooh ooi ook ool oon ooo oos oot os- osc ose osg osh osi osk osl osn oso oss ost ot- otc ote otg oth oti otk otl otn oto ots ott scc sce scg sch sci sck scl scn sco scs sct se- sec see seg seh sei sek sel sen seo ses set sgc sge sgg sgh sgi sgk sgl sgn sgo sgs sgt sh- shc she shg shh shi shk shl shn sho shs sht sic sie sig sih sii sik sil sin sio sis sit sk- skc ske skg skh ski skk skl sko sks skt slc sle slg slh sli slk sll sln slo sls slt snc sne sng sni snk snl snn sno sns snt soc soe sog soh soi sok sol son soo sos sot ss- ssc sse ssg ssh ssi ssk ssl ssn sso sss sst stc ste stg sth sti stk stl stn sto sts stt tcc tce tcg tch tci tck tcl tcn tco tcs tct te- tec tee teg teh tei tek tel ten teo tes tet tgc tge tgg tgh tgi tgk tgl tgn tgo tgs tgt th- thc the thg thh thi thk thl thn tho ths tht tic tie tig tih tii tik til tin tio tis tit tkc tke tkg tkk tkl tko tks tkt tlc tle tlg tlh tli tlk tll tln tlo tls tlt tnc tne tng tnh tni tnk tnl tnn tno tns tnt to- toc toe tog toh toi tok tol ton too tos tot tsc tse tsg tsh tsi tsk tsl tsn tso tss tst ttc tte ttg tth tti ttk ttl ttn tto tts ttt