D331311121133132313331333132333132313331323331323223311233112212221   >>    D33131112113313231333133313233313231333132333132322331123311221222   <<    D331311121133132313331333132333132313331323331323223311233112212223   >>      D331311121133132313331333132333132313331323331323223311233112212222   >>