C1212121231123232233131323223313233313233313223313231133132313233112321   >>    C121212123112323223313132322331323331323331322331323113313231323311232   <<    C1212121231123232233131323223313233313233313223313231133132313233112323   >>      C1212121231123232233131323223313233313233313223313231133132313233112322   >>