ooo oos oot os- osd ose osf osg osi osk osl osn oso oss ost ot- otd ote otf otg oti otk otl otn oto ots ott sdd sde sdf sdg sdi sdk sdl sdn sdo sds sdt se- sed see sef seg sei sek sel sen seo ses set sfd sfe sff sfg sfi sfk sfl sfn sfo sfs sft sgd sge sgf sgg sgi sgk sgl sgn sgo sgs sgt sid sie sif sig sii sik sil sin sio sis sit sk- skd ske skf skg ski skk skl sko sks skt sld sle slf slg sli slk sll sln slo sls slt snd sne snf sng sni snk snl snn sno sns snt sod soe sof sog soi sok sol son soo sos sot ss- ssd sse ssf ssg ssi ssk ssl ssn sso sss sst std ste stf stg sti stk stl stn sto sts stt tdd tde tdf tdg tdi tdk tdl tdn tdo tds tdt te- ted tee tef teg tei tek tel ten teo tes tet tfd tfe tff tfg tfi tfk tfl tfn tfo tfs tft tge tgf tgg tgi tgk tgl tgn tgo tgs tgt tid tie tif tig tii tik til tin tio tis tit tke tkg tkk tkl tko tks tkt tld tle tlf tlg tli tlk tll tln tlo tls tlt tnd tne tnf tng tni tnk tnl tnn tno tns tnt to- tod toe tof tog toi tok tol ton too tos tot tsd tse tsf tsg tsi tsk tsl tsn tso tss tst ttd tte ttf ttg tti ttk ttl ttn tto tts ttt