Letters that make bird's foot trefoil
s, o, b, d, e, f, l, r, t, i are letters that make 'bird's foot trefoil'
Words within bird's foot trefoil
foil, oil, trefoil, re, IR, FO, ref, tref, il, foot, bird, bird's foot, IL, Re, Bi, Ir are words within 'bird's foot trefoil'