C1111233133313231133133313133313331323133313221211113313232133313222221   >>    C111123313331323113313331313331333132313331322121111331323213331322222   <<    C1111233133313231133133313133313331323133313221211113313232133313222223   >>      C1111233133313231133133313133313331323133313221211113313232133313222222   >>