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Text Elements
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1
2
1
2
3
TOP
TOP
TOP
PUSH
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2
3
TOP = 3
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2
3
4
TOP = 4
POP
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2
3
4
TOP = 4
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2
3
TOP = 3
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1
2
1
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FRONT=1
REAR = 1
FRONT=1
FRONT=1
REAR++; REAR=2
REAR++; REAR=3
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2
3
FRONT=1
REAR=4
4
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3
FRONT++; FRONT = 2
REAR=4
4