C11111211113313112113313331333133313331333132212111133132223213221   >>    C1111121111331311211331333133313331333133313221211113313222321322   <<    C11111211113313112113313331333133313331333132212111133132223213223   >>      C11111211113313112113313331333133313331333132212111133132223213222   >>