C111123313331323113313331333133313331323133112113313232212111111212312321   >>    C11112331333132311331333133313331333132313311211331323221211111121231232   <<    C111123313331323113313331333133313331323133112113313232212111111212312323   >>      C111123313331323113313331333133313331323133112113313232212111111212312322   >>