C11111211113313112113313331333132313331322132333133313231321123231323221   >>    C1111121111331311211331333133313231333132213233313331323132112323132322   <<    C11111211113313112113313331333132313331322132333133313231321123231323223   >>      C11111211113313112113313331333132313331322132333133313231321123231323222   >>