C11111211113313112113313331313331323133313331333133313231322312311   >>    C1111121111331311211331333131333132313331333133313331323132231231   <<    C11111211113313112113313331313331323133313331333133313231322312313   >>      C11111211113313112113313331313331323133313331333133313231322312312   >>