sere sern sero serr sers seru sesc sese seso sess seur sncc snco sned snee sner snes snns snoc snod snoo snor snos snrs snsd snur snus soce soco socr socs sodd sode sodo sods sodu soec soen soeo soes son- sond sone sono sons sonu sood soon soor soos sord sore sorn soro sorr sors soru sose soso soss soud soue soun sour sous srcc srde srec sreo sres srnn srno sros srsd sscc ssce sscs ssdc ssdd ssec ssee sses ssns ssoc ssrc ssrs sssc ssss suc- succ sucr sucs sudd sude sudo suds sued suee suen suer sues sueu sun- sund sune sunn suno suns sunu suor suos sur- surc surd sure surn suro surr surs suru sus- susd suse suso suss susu suus ucdc ucdd uces ucon ucos ucrc ucsc ucsd ucsu udds uden uder udon udoo udos udsd udun uend ueno uers uesn uess uncc unce unco uncs unde undo unds unec uned unee unen uner unes unne unno unns unon unos unro unrs uns- unsc unso unus uocc uone uor- uore urde urds urdu ure- ured ures urne urns uro- uroo urre urse urso urss ursu urun urur urus uscc usce usco uscs usdc usde usdo usds used usee usen user uses usnc usno usnr usnu usoc usoe usos ussc usse ussr usss ussu usun usus uuen uuno uuoc uuuu