Write \(\mathcal U=\{L,C,M,D,R\}\), when \({\mathcal U}^\infty\) is the set of infinite sequences of the symbols \(LB_k\) [if \((A_0,A_1,\ldots,A_{k-1})\) has an odd number of \(M\)'s]. Let \(\varphi: {\mathcal U}^\infty\rightarrow {\mathcal U}^\infty\) be the \textit{shift map}, that is, \(\varphi(A_0,A_1,\ldots)=(A_1,A_2,\ldots)\). We will say that two sequences \(K^1, K^2\in {\mathcal U}^\infty\) are \textit{admissible} if they satisfy the following conditions for any \(r\in \{1,2\}\): (a) if \(K^r=(A_0,A_1,\ldots ,A_k,\ldots)\) and \(A_k\) equals \(C\) (resp. \(D\)), then \(\varphi^k(K^r)=K^1\) [resp. \(\varphi^k(K^r)=K^2\)]; (b) \(K^1 \preceq \varphi^i(K^r)\preceq K^2\) for any positive integer \(i\). We call the set \(\Sigma_3\) of admissible pairs \((K^1, K^2)\) the \textit{kneading plane}. The reason is that if \(f\) is a \textit{boundary anchored bimodal map with the shape \((+,-,+)\)}, that is, a continuous map \(f:[a,b]\rightarrow [a,b]\) with \(f(a)=a\), \(f(b)=b\) such that, for some intermediate points \(a