SUBTILISINS

bi in is it li nu si ti un us ut

bin bis bit bun bus but ins its lib lin lis lit nib nil nit nub nus nut sib sin sis sit sub sun til tin tis tub tui tun uns uts

bins bint bits blin buns bunt buss bust buts ibis inti libs lins lint list lits litu lunt lust nibs nils nisi nits nubs nuts sibs silt sins sits slit slub slut snib snit snub stub stun subs suit suns suss tils tins tubs tuis tuns unit