C111123313331323113313331333133313331323133112113313232212113321   >>    C11112331333132311331333133313331333132313311211331323221211332   <<    C111123313331323113313331333133313331323133112113313232212113323   >>      C111123313331323113313331333133313331323133112113313232212113322   >>