SUBSTITUTION — АНАГРАМИ

substitution

stub out

butt in butt on in situ in-situ sinuous sit out subunit sunsuit toss in tuition

biotin bo's'n bo'sun button insist intuit otitis out in sit in sit-in titbit

biont bison bitis bonus bos'n bosun butut inuit nisus on it sinus sison snout stint stout stunt titus to it tobin tobit tonus tunis tutsi

bitt boss bout buns bunt buss bust butt ibis inst inti isis nisi nist nous ntis nuts obit onus otis otus oust sion snit snob snot snub stob stub stun suit tint titi tito tons toss tout tutu unio unit

bin bit bns bos bot btu bun bus but iis ins ion iou isi isn nib nit nob not nsu nub nut obi ois oni out s/n sib sin sis sit sob son sos sot sou sub sun sus tin tit tiu tnt ton tot tss tub tun uns usn utn utu

bi bs ii in io nb ni no nt nu ob on os sb si sn so ss tb ti tn tt un us ut