I have found my self drawing little “maze like” shape on paper and told my self ,
it will be nice to implement it as part of my steps to control more and more aspects in L system .

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the basic shape.
v=default parameter value = 0.033
X(0.1)
X(h):((t+0.99)%2)!=0=F(h)+F(v+(t-1)*0.066))+F(h)-F(v)-X(h+v)
X(h)=F(h)-F(v+(t-1)*0.066))-F(h)+F(v)+X(h+v)