C11111211113313112113313331333132313331322113121111331333232213111   >>    C1111121111331311211331333133313231333132211312111133133323221311   <<    C11111211113313112113313331333132313331322113121111331333232213113   >>      C11111211113313112113313331333132313331322113121111331333232213112   >>