C11111211113313112113313331333133313331333132233131133133321131   >>    C1111121111331311211331333133313331333133313223313113313332113   <<    C11111211113313112113313331333133313331333132233131133133321133   >>      C11111211113313112113313331333133313331333132233131133133321132   >>