Let  $f_1\left(x\right)and{f}_2\left(x\right)$ be continuous and differentiable functions. If  $f_1\left(0\right)=f_1\left(2\right)=f_1\left(4\right),f_1\left(1\right)+f_1\left(3\right)=f_2\left(0\right)=f_2\left(2\right)=f_2\left(4\right)=0$  and if  $f_1\left(x\right)=0and{f}_2^1\left(x\right)=0$
  do not have common root, then the minimum number of zeros of  $f_1^1\left(x\right)f_2^1\left(x\right)+f_1\left(x\right)f_2^{11}\left(x\right)in[0,4],is$