10 10 S5/S+3=S*1 7WW=WWW3WS -WW3WWW=W- S1-S=1+S*5 =WW/WWW*W= S3+74=S9-S *WWWSW/WW* 9S6/2S3S/3 SWWWSWSWW+ 5+S=8S3-1S