C111123313331323113313331333133313231323133312111113331313113313221211   >>    C11112331333132311331333133313331323132313331211111333131311331322121   <<    C111123313331323113313331333133313231323133312111113331313113313221213   >>      C111123313331323113313331333133313231323133312111113331313113313221212   >>