Begin REPT
Begin MACRO
Within nested MACRO: _u1
Within MACRO: _u2
Within REPT: _u3
Begin REPT
Begin MACRO
Within nested MACRO: _u4
Within MACRO: _u5
Within REPT: _u6

Begin REPT: _u7
Begin MACRO: _u8
Within nested MACRO: _u9
Within MACRO: _u8
Within REPT: _u7
Begin REPT: _u10
Begin MACRO: _u11
Within nested MACRO: _u12
Within MACRO: _u11
Within REPT: _u10