C11111211113313112113313331333133313331322113312111133132311321   >>    C1111121111331311211331333133313331333132211331211113313231132   <<    C11111211113313112113313331333133313331322113312111133132311323   >>      C11111211113313112113313331333133313331322113312111133132311322   >>