D11211112331322331311211331323113313233313331323133313232211321   >>    D1121111233132233131121133132311331323331333132313331323221132   <<    D11211112331322331311211331323113313233313331323133313232211323   >>      D11211112331322331311211331323113313233313331323133313232211322   >>