D1121323223313223313112113313231133132333132311221123231333112321   >>    D112132322331322331311211331323113313233313231122112323133311232   <<    D1121323223313223313112113313231133132333132311221123231333112323   >>      D1121323223313223313112113313231133132333132311221123231333112322   >>