NIGHTBIRDS

bi hi id in is it sh si ti

bid big bin bis bit dib dig din dis dit ghi gib gid gin git hid hin his hit ids ins its nib nit nth rib rid rig rin sib sin sir sit sri tin tis

bidi bids bigs bind bins bint bird bits brig brin bris brit dibs digs ding dins dint dirt dish dits drib ghis gibs gids gins gird girn girt gist gits grid grin grit hind hins hint hisn hist hits ibis inti irid iris nibs nidi nigh nisi nits ribs rids rigs rind ring rins shin shit shri sidh sigh sign sing sinh sith snib snit stir thin thir this ting tins trig