D112121123313113313132313221323133313132322331323221122112323132311   >>    D11212112331311331313231322132313331313232233132322112211232313231   <<    D112121123313113313132313221323133313132322331323221122112323132313   >>      D112121123313113313132313221323133313132322331323221122112323132312   >>