C11111211113313112113313331333133313331333132212111113322123231   >>    C1111121111331311211331333133313331333133313221211111332212323   <<    C11111211113313112113313331333133313331333132212111113322123233   >>      C11111211113313112113313331333133313331333132212111113322123232   >>