sff sfg sfi sfn sfp sfr sfs sft sfu sga sge sgf sgg sgi sgn sgp sgr sgs sgt sgu sia sie sif sig sii sin sip sir sis sit siu sna sne snf sng sni snn snp snr sns snt snu spa spe spf spg spi spn spp spr sps spt spu sr- sra sre srf srg sri srn srp srr srs srt ss- ssa sse ssf ssg ssi ssn ssp ssr sss sst ssu sta ste stf stg sti stn stp str sts stt stu sua sue suf sug sui sun sup sur sus sut suu taa tae taf tag tai tan tap tar tas tat tau te- tea tee tef teg tei ten tep ter tes tet teu tfa tfe tff tfg tfi tfn tfp tfr tfs tft tfu tga tge tgf tgg tgi tgn tgp tgr tgs tgt tgu tia tie tif tig tii tin tip tir tis tit tiu tna tne tnf tng tni tnn tnp tnr tns tnt tpa tpe tpf tpg tpi tpn tpp tpr tps tpt tpu tra tre trf trg tri trn trp trr trs trt tru tsa tse tsf tsg tsi tsn tsp tsr tss tst tsu tta tte ttf ttg tti ttn ttp ttr tts ttt ttu tua tue tuf tug tui tun tup tur tus tut tuu ua- uaa uae uaf uag uai uan uap uar uas uat uau uea uee uef ueg uei uen uep uer ues uet ufa ufe uff ufg ufi ufn ufp ufr ufs uft ufu uga uge ugf ugg ugi ugn ugp ugr ugs ugt ugu uia uie uif uig uii uin uip uir uis uit uiu un- una une unf ung uni unn unp unr uns unt unu up- upa upe upf upg upi upn upp upr ups upt upu ur- ura ure urf urg uri urn urp urr urs urt uru usa use usf usg usi usn usp usr uss ust usu uta ute utf uti utn utp utr uts utt utu uua uue uug uun uur uus uut uuu