D11211112331322331311211331323113313233313331323133313233313223121   >>    D1121111233132233131121133132311331323331333132313331323331322312   <<    D11211112331322331311211331323113313233313331323133313233313223123   >>      D11211112331322331311211331323113313233313331323133313233313223122   >>