C1111233133313231133133313133313331323133313221211113313112132211   >>    C111123313331323113313331313331333132313331322121111331311213221   <<    C1111233133313231133133313133313331323133313221211113313112132213   >>      C1111233133313231133133313133313331323133313221211113313112132212   >>