C312322331333132212111133133313331333133312121111331211111211111232321   >>    C31232233133313221211113313331333133313331212111133121111121111123232   <<    C312322331333132212111133133313331333133312121111331211111211111232323   >>      C312322331333132212111133133313331333133312121111331211111211111232322   >>