CBSE
A - (s), B - (P)(s), C - (q)(s) D - (r)
A -(p), B -(q)(r), C -(p)(q), - (s)
B - (r)(p), B - (q), C -(P)(s), D - (r)
A - (s), B -(s)(r), C -(q), D - (s)
A - (p), B - (q), C - (r), D - (r)(s)
A - (r)(s), B - (r), C - (q), D - (p)
A - (s) (p), B - (p), C - (q), D (p)(q)
A - (q)(r), B - (p),(s), C - (s), D - (P)
A - (p)(r), B - (q)(r), C (r)(t), D - (p)(s)
A - (p)(s), B - (r)(t) , C - (p), D - (s)
A - (q)(s), B - (p)(s), C - (s)(r), D - (p)(r)
A - (r)(t), B (P)(s), C - (r)(s) D - (s)(t)
A - (p)(s), B - (p)(r), C - (p)(q), D - (p)(r)
A - (r)(s), B - (q)(r), C - (p)(s), D - (q)(r)
A - (q)(r), B - (p) (s), C - (r), D - (p) q)
A - (s), B - (q), C - (r), D - (p)
A - (p)(r), B - (p)(q), C - (p)(r)(s), D - (p)(s)
A - (q)(p), B - (p)(r), C - (q)(p)(s), D - (p)
A - (s), B - (p)(s), C - q)(p)(s), D -(s)
A - (p), B - (s), C - (r), D - (p)