C11111211113313112113313331333133313331333131211113313233313332223321   >>    C1111121111331311211331333133313331333133313121111331323331333222332   <<    C11111211113313112113313331333133313331333131211113313233313332223323   >>      C11111211113313112113313331333133313331333131211113313233313332223322   >>