C11111211113313112113313331333132313331322132333133313231321123232321   >>    C1111121111331311211331333133313231333132213233313331323132112323232   <<    C11111211113313112113313331333132313331322132333133313231321123232323   >>      C11111211113313112113313331333132313331322132333133313231321123232322   >>