C1212121231123232233131323223313233313233313223313231133132333131321   >>    C121212123112323223313132322331323331323331322331323113313233313132   <<    C1212121231123232233131323223313233313233313223313231133132333131323   >>      C1212121231123232233131323223313233313233313223313231133132333131322   >>