D2122132313112331311221123133313232233132331211111211111323223311   >>    D212213231311233131122112313331323223313233121111121111132322331   <<    D2122132313112331311221123133313232233132331211111211111323223313   >>      D2122132313112331311221123133313232233132331211111211111323223312   >>