SUBDISTRICT

bi id is it si ti us ut

bid bis bit bud bur bus but cis cru cub cud cur cut dib dis dit dub dui ids its rib rid rub rut sib sic sir sis sit sri sub tic tis tit tub tui tut urb urd uts

bidi bids bird bits bitt bris brit brut buds burd burs buss bust buts butt cist crib cris crit crud crus cubs cuds curb curd curs curt cuss cuts dibs dirt disc diss dits drib drub dubs duci duct duit dust ibis irid iris ribs rids rubs rust ruts scud scut sibs sics sirs sits sris stir stub stud subs suds suit surd tics titi tits tubs tuis turd tuts urbs urds uric