Which of the following is/are not valid basic blocks
1
label:
a = a + 1
cjump(a < 10) label22
label1:
c = a + 1
cjump( c == 0) label4
a = 20
jump label63
true:
a = 10
jump label1
false:4
entry:
c = 5
a = c-4
jump exit
label:
a = a + 1
cjump(a < 10) label2label1:
c = a + 1
cjump( c == 0) label4
a = 20
jump label6true:
a = 10
jump label1
false:entry:
c = 5
a = c-4
jump exit