D33131112113313231333133313331333132313231333132321323223313221   >>    D3313111211331323133313331333133313231323133313232132322331322   <<    D33131112113313231333133313331333132313231333132321323223313223   >>      D33131112113313231333133313331333132313231333132321323223313222   >>