C1212121231123232233131323223313233313233313223313231323111133131   >>    C121212123112323223313132322331323331323331322331323132311113313   <<    C1212121231123232233131323223313233313233313223313231323111133133   >>      C1212121231123232233131323223313233313233313223313231323111133132   >>