The SR combo is drawn by simple connection using either the of the 2 forms of the S. If the standard "S curve" is used then the end of the "S curve" can be used as the top dash of the upper "Z double dash" to avoid having to extend the word line.
I actually do not require strict attribution as the licence indicates. I realize the "puzzle" value would be lost I will galdly provide express exemptions for your projects Please contact me at vasten@dscript.org