I123133313233313231313331322132313231333132313112331323133313232211211311   >>    I12313331323331323131333132213231323133313231311233132313331323221121131   <<    I123133313233313231313331322132313231333132313112331323133313232211211313   >>      I123133313233313231313331322132313231333132313112331323133313232211211312   >>