C11111211113313112113313331333133313231323223313231333132312122311   >>    C1111121111331311211331333133313331323132322331323133313231212231   <<    C11111211113313112113313331333133313231323223313231333132312122313   >>      C11111211113313112113313331333133313231323223313231333132312122312   >>