Syntax Check for Repeats
The image below is just an example but it illustrates my query.
Is this type of repeat structure valid musical syntax? The main part of the score repeats but within that there are measures to be played first time round only and other measures to be played second time round only. Can I lay it out as shown, (with multiple separated  and  measures), or do all the [ 1 ] measures have to be contiguous and all the [ 2 ] measures contiguous?