C11111211113313112113313331333133313331333132313331333133313331333131121221111   >>    C1111121111331311211331333133313331333133313231333133313331333133313112122111   <<    C11111211113313112113313331333133313331333132313331333133313331333131121221113   >>      C11111211113313112113313331333133313331333132313331333133313331333131121221112   >>