C11111211113313112113313331333133313331312322121111133313331323212211111   >>    C1111121111331311211331333133313331333131232212111113331333132321221111   <<    C11111211113313112113313331333133313331312322121111133313331323212211113   >>      C11111211113313112113313331333133313331312322121111133313331323212211112   >>