GERMAN TACTICAL SYSTEMS

#Several quadrilaterals juxtaposed, joined or intersecting #Rhombs or squares standing on one of the corners thereof #Quadrilaterals with dark surfaces or parts of surfaces #Quadrilaterals containing one or more letters #Quadrilaterals containing representations of animals or parts of animals' bodies or plants #Letters in light-coloured characters on a dark background #Several letters #Series of letters separated from one another other than by a single space #Series of letters in different dimensions #Letters presenting a special form of writing #Birds in flight or with outspread wings #Sparrows or other passerine birds, thrush #Birds or bats stylized