D3313223323213233313232233132311211331323133313331323223313233313221221   >>    D331322332321323331323223313231121133132313331333132322331323331322122   <<    D3313223323213233313232233132311211331323133313331323223313233313221223   >>      D3313223323213233313232233132311211331323133313331323223313233313221222   >>