I1231333132333132313133313221323132313331323131123313231323133313231211   >>    I123133313233313231313331322132313231333132313112331323132313331323121   <<    I1231333132333132313133313221323132313331323131123313231323133313231213   >>      I1231333132333132313133313221323132313331323131123313231323133313231212   >>