C11111211113313112113313331311211331333133313331333133313231333132211321   >>    C1111121111331311211331333131121133133313331333133313331323133313221132   <<    C11111211113313112113313331311211331333133313331333133313231333132211323   >>      C11111211113313112113313331311211331333133313331333133313231333132211322   >>