______R+R+R+R+__R+R+R+R_____
______R_________________ R_____
______ _________________ +_____
R+R+R+R+R+R+R__________ R+R+R
+____________+_______________ +
R____________R_______________ R
_____+_______R________________
R____R+_______+______________ R
+____+ _R_______R____________ +
R____R___+_______+___________ R
+R+R+R____+R+R+R+R_____ R+R+R
______R_________________R_____
______+_________________+_____
______R+R+R+R+__R+R+R+R_____
______R+R+R+R+__R+R+R+R_____
______R_________________ R_____
______ _________________ +_____
R+R+R+R+R+R+R__________ R+R+R
+____________+_______________ +
R____________R_______________ R
_____+_______R___________...