a) 4*0+3 (3:4=0 r 3)
b) 4*12+1 (49:4=12 r 1)
c) 4*19+3 (79:4=19 r 3)
d) 4*31+2 (126:4=31 r 2)
e) 4*123+0 (492:4=123 r 0)
