Letters that make cardinal number
a, b, d, e, l, n, c, m, r, i, u are letters that make 'cardinal number'
Words within cardinal number
ER, number, MB, card, nu, ar, be, numb, umber, cardinal, in, din, car, Mb, AL, AR, CA, IN, Al, Ar, Be, Ca, Er, In, Na are words within 'cardinal number'