C11111211113313112113313331333132313331322132333133313232213331323221231   >>    C1111121111331311211331333133313231333132213233313331323221333132322123   <<    C11111211113313112113313331333132313331322132333133313232213331323221233   >>      C11111211113313112113313331333132313331322132333133313232213331323221232   >>