These Two-Way Arrowz start out pointing east and are (individually) reversed to point west to reach the Coin on the Yellow Toggle Switch .
The western TWA is reversed by the YTS in square M1.
The eastern TWA is reversed by the YTS in square N12.
The YTS at the square marked F7 reversez both of the TWAz in square F7.
and are (individually) reversed to point west 
to reach the Coin 
on the Yellow Toggle Switch 
.