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