I1231333132333132313133313221323132313331323131123313233313233313221311   >>    I123133313233313231313331322132313231333132313112331323331323331322131   <<    I1231333132333132313133313221323132313331323131123313233313233313221313   >>      I1231333132333132313133313221323132313331323131123313233313233313221312   >>