C21111113313132322331323331323113313233313331323133313233232331   >>    C2111111331313232233132333132311331323331333132313331323323233   <<    C21111113313132322331323331323113313233313331323133313233232333   >>      C21111113313132322331323331323113313233313331323133313233232332   >>