<c_syntax>clause-1</c_syntax> ,, 6.8
<c_syntax>clause-1</c_syntax> <c_syntax>expr-2</c_syntax> ,, 2.8
<c_syntax>clause-1</c_syntax> <c_syntax>expr-2</c_syntax> <c_syntax>expr-3</c_syntax> ,, 2.7
<c_syntax>clause-1</c_syntax> <c_syntax>expr-3</c_syntax> ,, 2.8
<c_syntax>expr-2</c_syntax> ,, 3.6
<c_syntax>expr-2</c_syntax> <c_syntax>expr-3</c_syntax> ,, 2.9
<c_syntax>expr-3</c_syntax> ,, 4.5
