Two transactions T1 and T2 are given as
T1: R1(A)W1(A)
T2:R2(A)W2(A)
where Ri(A)denotes a read operation by transaction Ti on a variable A and Wi(A)denotes a write operation by transaction Ti on a variable A. The total number schedules which are not conflict serializable that can be formed by T1 and T2 is ______.Enter numerical value using the virtual keypad. Round off where necessary.