WA - WE || WA - WB - WC - WD - WE -
WF - WJ || WF - WG - WH - WI - WJ -
WK - WO || WK - WL - WM - WN - WO -
WP - WT || WP - WQ - WR - WS - WT -
WU - WZ || WU - WV - WW - WX - WY - WZ -