D1323112331313331313311232322331323133313131333132313232211221123232321   >>    D132311233131333131331123232233132313331313133313231323221122112323232   <<    D1323112331313331313311232322331323133313131333132313232211221123232323   >>      D1323112331313331313311232322331323133313131333132313232211221123232322   >>