bbbb bbbs bblb bbls bbox blbt blls blob bloo blop blot blsp blss blst blts bobb bobo bobs boll bolo bols bolt boob bool boop boos boot boox bopp bops boso boss bost botb boto bots bott bpot bsos bspp bsts btbp btlp btob btps btss bttb lbos llbs llll lloo llps lob- lobb lobo lobs loll lolo lols loob lool loop loos loot lopp lops loso losp loss lost lotl loto lots lott lox- loxo lppl lpss lptb lspl lsso lssp lsts ltbl ltps ltsp lxxx obbo obls obol obos obot obox obss obst obts olbo ollo olos olot olst oolo oooo ooos oops oost ootb ootp oots opls opo- opos oppo opps opto opts osbp oslo osoo osos ossb osso osts otbs oto- otoo otos otpp otso otto otts oxo- oxos oxox oxxo pbsp plob ploo plop plos plot plpp plss pltt pobo pobs poll polo pols polt pool poop poos poot pop- popo popp pops popt posb poso poss post poto pots pott pplo ppos pppo pppp ppps ppss ppts pptt psbt psol psos pspp psps psso psst psts ptbl ptol ptop ptox s-os sbbs sbot sbsp sbst slbp sllp slob sloo slop slos slot slpp slps slst slts sobo sobp sobs sobt soll solo solp sols solt sool soop soos soot sopo sopp sops soso soss sost sotl soto sotp sots soxs splo splp spls spoo spop spos spot spox spps spso spsp spss spst sptb spto spts sslp sslt ssop ssot sspl sspo ssps sspt sspx sssb ssss sstb sstl sstp ssts stbs stlo stlt stob stol stoo stop stos stot stox stpp stps stss sxbl tbbs tbox tbsp tbst tbtp tlos tltx tobo tobs tobt tol- toll tolo tolt tool toos toot top- topo topp tops topt tosb toso toss tost tosx toto tots tott tox- toxo toxs toxt tpls tpol tppp tptp tsob tsol tsop tsos tspo tsps tspt tsst tsts ttbb ttop ttss tttt xbox xlox xolo xosl xoxo xpot xpto xslt xtbs xtol xxxo xxxx