C11111211113313112113313331333133313331312111133133322331112121   >>    C1111121111331311211331333133313331333131211113313332233111212   <<    C11111211113313112113313331333133313331312111133133322331112123   >>      C11111211113313112113313331333133313331312111133133322331112122   >>