C131312213233313231313231323232132313231313232233132333132322131321   >>    C13131221323331323131323132323213231323131323223313233313232213132   <<    C131312213233313231313231323232132313231313232233132333132322131323   >>      C131312213233313231313231323232132313231313232233132333132322131322   >>