[ South ] { flow: south; }

[ East ] --> [ South ]
[ South ] --> [ West ]
[ West ] --> { flow: west; } [ South Too ]
[ South Too ] --> { flow: down; } [ right (west) ]
[ right (west) ] --> { flow: right; } [ left (south) ]
[ left (south) ] --> { flow: left; } [ east (default) ]
[ east (default) ] --> [ final ]