C11111211113313112113313331333133313331333132313331333133313331311222212111   >>    C1111121111331311211331333133313331333133313231333133313331333131122221211   <<    C11111211113313112113313331333133313331333132313331333133313331311222212113   >>      C11111211113313112113313331333133313331333132313331333133313331311222212112   >>