start X rule X -> F L D X R X U L T E X V S B length 100 depth 10 cmd X nop cmd F fd cmd B bk cmd R rt 180 cmd L lt 90 cmd S rt 4 cmd T lt 4 cmd D scale 0.3 cmd U scale 3.3333333333333335 cmd E scale 0.87 cmd V scale 1.1494252873563218