C11111211113313112113313331311211331333133313331333131333132322121   >>    C1111121111331311211331333131121133133313331333133313133313232212   <<    C11111211113313112113313331311211331333133313331333131333132322123   >>      C11111211113313112113313331311211331333133313331333131333132322122   >>