I12313331323331323131333132213231323133313231311233132313123232211   >>    I1231333132333132313133313221323132313331323131123313231312323221   <<    I12313331323331323131333132213231323133313231311233132313123232213   >>      I12313331323331323131333132213231323133313231311233132313123232212   >>