input12_2.txt

A = 1
B = 1
C = 0
D = 26

if (C != 0)
{
    GoTo LabelA
}
GoTo LabelB
LabelA: C = 7
LabelC: D++
C--
if (C != 0)
{
    GoTo LabelC
}
LabelB: C = A
LabelD: A++
B--
if (B != 0)
{
    GoTo LabelD
}
B = C
D--
if (D != 0)
{
    GoTo LabelB
}
C = 16
LabelF: D = 12
LabelE: A++
D--
if (D != 0)
{
    GoTo LabelE
}
C--
if (C != 0)
{
    GoTo LabelF
}