D1121323223313223313112113313231133132333132333132313231331122221   >>    D112132322331322331311211331323113313233313233313231323133112222   <<    D1121323223313223313112113313231133132333132333132313231331122223   >>      D1121323223313223313112113313231133132333132333132313231331122222   >>