C11111333133313232233133313331333132313231121133132313331323133112312121   >>    C1111133313331323223313331333133313231323112113313231333132313311231212   <<    C11111333133313232233133313331333132313231121133132313331323133112312123   >>      C11111333133313232233133313331333132313231121133132313331323133112312122   >>