Rechteck doppelt

[5,7]	[5,8]
[5,9]	[5,9]
[5,10]	[5,10]
[5,10]	[5,11]
[5,11]	[5,12]
[5,12]	[5,12]
[5,13]	[5,13]
[5,13]	[4,21]