C11111211113313112113313331333132313331322132333133313331322113121111111121   >>    C1111121111331311211331333133313231333132213233313331333132211312111111112   <<    C11111211113313112113313331333132313331322132333133313331322113121111111123   >>      C11111211113313112113313331333132313331322132333133313331322113121111111122   >>