D p t

D p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p tD p t