C111123313331323113313331333133313331323133112113313232212111113112123231   >>    C11112331333132311331333133313331333132313311211331323221211111311212323   <<    C111123313331323113313331333133313331323133112113313232212111113112123233   >>      C111123313331323113313331333133313331323133112113313232212111113112123232   >>