C1111233131211111211113313331333133313231312313331323221323132321   >>    C111123313121111121111331333133313331323131231333132322132313232   <<    C1111233131211111211113313331333133313231312313331323221323132323   >>      C1111233131211111211113313331333133313231312313331323221323132322   >>